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Finding the Fourth Proportional to 100,722.60, 151,083.90 and 65,701.80

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Solution

The fourth proportional to 100,722.60, 151,083.90 and 65,701.80 is: 98,552.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,722.60 : 151,083.90 = 65,701.80 : x
  2. Step 2: Convert to fraction form
    100,722.60/151,083.90 = 65,701.80/x
  3. Step 3: Cross multiply
    100,722.60x = 151,083.90 × 65,701.80
  4. Step 4: Simplify right side
    100,722.60x = 9,926,484,181.02
  5. Step 5: Solve for x
    x = 9,926,484,181.02/100,722.60
  6. Step 6: Final answer
    x = 98,552.70

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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.