Home / 156,423.97-234,635.94-72,159.20

Finding the Fourth Proportional to 156,423.97, 234,635.94 and 72,159.20

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Solution

The fourth proportional to 156,423.97, 234,635.94 and 72,159.20 is: 108,238.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,423.97 : 234,635.94 = 72,159.20 : x
  2. Step 2: Convert to fraction form
    156,423.97/234,635.94 = 72,159.20/x
  3. Step 3: Cross multiply
    156,423.97x = 234,635.94 × 72,159.20
  4. Step 4: Simplify right side
    156,423.97x = 16,931,140,548.47
  5. Step 5: Solve for x
    x = 16,931,140,548.47/156,423.97
  6. Step 6: Final answer
    x = 108,238.79

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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.