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Finding the Fourth Proportional to 156,509.91, 234,737.59 and 72,262.89

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Solution

The fourth proportional to 156,509.91, 234,737.59 and 72,262.89 is: 108,381.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,509.91 : 234,737.59 = 72,262.89 : x
  2. Step 2: Convert to fraction form
    156,509.91/234,737.59 = 72,262.89/x
  3. Step 3: Cross multiply
    156,509.91x = 234,737.59 × 72,262.89
  4. Step 4: Simplify right side
    156,509.91x = 16,962,816,645.04
  5. Step 5: Solve for x
    x = 16,962,816,645.04/156,509.91
  6. Step 6: Final answer
    x = 108,381.74

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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.