Home / 102,192.55-141,038-61,905.13

Finding the Fourth Proportional to 102,192.55, 141,038 and 61,905.13

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Solution

The fourth proportional to 102,192.55, 141,038 and 61,905.13 is: 85,436.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,192.55 : 141,038 = 61,905.13 : x
  2. Step 2: Convert to fraction form
    102,192.55/141,038 = 61,905.13/x
  3. Step 3: Cross multiply
    102,192.55x = 141,038 × 61,905.13
  4. Step 4: Simplify right side
    102,192.55x = 8,730,975,724.94
  5. Step 5: Solve for x
    x = 8,730,975,724.94/102,192.55
  6. Step 6: Final answer
    x = 85,436.52

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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.