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Finding the Fourth Proportional to 156,305.81, 234,458.71 and 103,817.81

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Solution

The fourth proportional to 156,305.81, 234,458.71 and 103,817.81 is: 155,726.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,305.81 : 234,458.71 = 103,817.81 : x
  2. Step 2: Convert to fraction form
    156,305.81/234,458.71 = 103,817.81/x
  3. Step 3: Cross multiply
    156,305.81x = 234,458.71 × 103,817.81
  4. Step 4: Simplify right side
    156,305.81x = 24,340,988,375.79
  5. Step 5: Solve for x
    x = 24,340,988,375.79/156,305.81
  6. Step 6: Final answer
    x = 155,726.71

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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.