Home / 156,429.59-234,463.64-72,012.75

Finding the Fourth Proportional to 156,429.59, 234,463.64 and 72,012.75

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Solution

The fourth proportional to 156,429.59, 234,463.64 and 72,012.75 is: 107,935.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,429.59 : 234,463.64 = 72,012.75 : x
  2. Step 2: Convert to fraction form
    156,429.59/234,463.64 = 72,012.75/x
  3. Step 3: Cross multiply
    156,429.59x = 234,463.64 × 72,012.75
  4. Step 4: Simplify right side
    156,429.59x = 16,884,371,131.35
  5. Step 5: Solve for x
    x = 16,884,371,131.35/156,429.59
  6. Step 6: Final answer
    x = 107,935.92

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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.