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Finding the Fourth Proportional to 102,168.81, 140,996.28 and 63,916.13

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Solution

The fourth proportional to 102,168.81, 140,996.28 and 63,916.13 is: 88,206.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,168.81 : 140,996.28 = 63,916.13 : x
  2. Step 2: Convert to fraction form
    102,168.81/140,996.28 = 63,916.13/x
  3. Step 3: Cross multiply
    102,168.81x = 140,996.28 × 63,916.13
  4. Step 4: Simplify right side
    102,168.81x = 9,011,936,562.00
  5. Step 5: Solve for x
    x = 9,011,936,562.00/102,168.81
  6. Step 6: Final answer
    x = 88,206.34

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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.