Home / 91,861,501.05-137,792,251.58-81,099,820.80

Finding the Fourth Proportional to 91,861,501.05, 137,792,251.58 and 81,099,820.80

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Solution

The fourth proportional to 91,861,501.05, 137,792,251.58 and 81,099,820.80 is: 121,649,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,861,501.05 : 137,792,251.58 = 81,099,820.80 : x
  2. Step 2: Convert to fraction form
    91,861,501.05/137,792,251.58 = 81,099,820.80/x
  3. Step 3: Cross multiply
    91,861,501.05x = 137,792,251.58 × 81,099,820.80
  4. Step 4: Simplify right side
    91,861,501.05x = 11,174,926,910,361,016
  5. Step 5: Solve for x
    x = 11,174,926,910,361,016/91,861,501.05
  6. Step 6: Final answer
    x = 121,649,731.20

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.