Home / 129,124.90-178,192.17-71,762.41

Finding the Fourth Proportional to 129,124.90, 178,192.17 and 71,762.41

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Solution

The fourth proportional to 129,124.90, 178,192.17 and 71,762.41 is: 99,032.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,124.90 : 178,192.17 = 71,762.41 : x
  2. Step 2: Convert to fraction form
    129,124.90/178,192.17 = 71,762.41/x
  3. Step 3: Cross multiply
    129,124.90x = 178,192.17 × 71,762.41
  4. Step 4: Simplify right side
    129,124.90x = 12,787,499,562.33
  5. Step 5: Solve for x
    x = 12,787,499,562.33/129,124.90
  6. Step 6: Final answer
    x = 99,032.02

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1.5x scale

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.