Home / 129,179.91-178,283.03-71,824.93

Finding the Fourth Proportional to 129,179.91, 178,283.03 and 71,824.93

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Solution

The fourth proportional to 129,179.91, 178,283.03 and 71,824.93 is: 99,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,179.91 : 178,283.03 = 71,824.93 : x
  2. Step 2: Convert to fraction form
    129,179.91/178,283.03 = 71,824.93/x
  3. Step 3: Cross multiply
    129,179.91x = 178,283.03 × 71,824.93
  4. Step 4: Simplify right side
    129,179.91x = 12,805,165,345.11
  5. Step 5: Solve for x
    x = 12,805,165,345.11/129,179.91
  6. Step 6: Final answer
    x = 99,126.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.