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Finding the Fourth Proportional to 124,810.71, 172,218.87 and 71,096.78

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Solution

The fourth proportional to 124,810.71, 172,218.87 and 71,096.78 is: 98,102.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,810.71 : 172,218.87 = 71,096.78 : x
  2. Step 2: Convert to fraction form
    124,810.71/172,218.87 = 71,096.78/x
  3. Step 3: Cross multiply
    124,810.71x = 172,218.87 × 71,096.78
  4. Step 4: Simplify right side
    124,810.71x = 12,244,206,251.14
  5. Step 5: Solve for x
    x = 12,244,206,251.14/124,810.71
  6. Step 6: Final answer
    x = 98,102.21

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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.