Home / 129,280.93-178,404.26-71,917.27

Finding the Fourth Proportional to 129,280.93, 178,404.26 and 71,917.27

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Solution

The fourth proportional to 129,280.93, 178,404.26 and 71,917.27 is: 99,243.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,280.93 : 178,404.26 = 71,917.27 : x
  2. Step 2: Convert to fraction form
    129,280.93/178,404.26 = 71,917.27/x
  3. Step 3: Cross multiply
    129,280.93x = 178,404.26 × 71,917.27
  4. Step 4: Simplify right side
    129,280.93x = 12,830,346,529.97
  5. Step 5: Solve for x
    x = 12,830,346,529.97/129,280.93
  6. Step 6: Final answer
    x = 99,243.92

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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.