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Finding the Fourth Proportional to 142,329.52, 213,486.58 and 72,207.01

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Solution

The fourth proportional to 142,329.52, 213,486.58 and 72,207.01 is: 108,306.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,329.52 : 213,486.58 = 72,207.01 : x
  2. Step 2: Convert to fraction form
    142,329.52/213,486.58 = 72,207.01/x
  3. Step 3: Cross multiply
    142,329.52x = 213,486.58 × 72,207.01
  4. Step 4: Simplify right side
    142,329.52x = 15,415,227,616.93
  5. Step 5: Solve for x
    x = 15,415,227,616.93/142,329.52
  6. Step 6: Final answer
    x = 108,306.61

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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.