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Finding the Fourth Proportional to 142,592.13, 213,962.04 and 72,471.51

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Solution

The fourth proportional to 142,592.13, 213,962.04 and 72,471.51 is: 108,744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,592.13 : 213,962.04 = 72,471.51 : x
  2. Step 2: Convert to fraction form
    142,592.13/213,962.04 = 72,471.51/x
  3. Step 3: Cross multiply
    142,592.13x = 213,962.04 × 72,471.51
  4. Step 4: Simplify right side
    142,592.13x = 15,506,152,121.48
  5. Step 5: Solve for x
    x = 15,506,152,121.48/142,592.13
  6. Step 6: Final answer
    x = 108,744.80

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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.