Home / 91,823.60-137,735.40-81,490.03

Finding the Fourth Proportional to 91,823.60, 137,735.40 and 81,490.03

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Solution

The fourth proportional to 91,823.60, 137,735.40 and 81,490.03 is: 122,235.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,823.60 : 137,735.40 = 81,490.03 : x
  2. Step 2: Convert to fraction form
    91,823.60/137,735.40 = 81,490.03/x
  3. Step 3: Cross multiply
    91,823.60x = 137,735.40 × 81,490.03
  4. Step 4: Simplify right side
    91,823.60x = 11,224,061,878.06
  5. Step 5: Solve for x
    x = 11,224,061,878.06/91,823.60
  6. Step 6: Final answer
    x = 122,235.05

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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.