Home / 131,864.26-181,972.60-71,435.12

Finding the Fourth Proportional to 131,864.26, 181,972.60 and 71,435.12

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Solution

The fourth proportional to 131,864.26, 181,972.60 and 71,435.12 is: 98,580.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,864.26 : 181,972.60 = 71,435.12 : x
  2. Step 2: Convert to fraction form
    131,864.26/181,972.60 = 71,435.12/x
  3. Step 3: Cross multiply
    131,864.26x = 181,972.60 × 71,435.12
  4. Step 4: Simplify right side
    131,864.26x = 12,999,234,517.71
  5. Step 5: Solve for x
    x = 12,999,234,517.71/131,864.26
  6. Step 6: Final answer
    x = 98,580.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.