Home / 129,125.10-178,192.46-71,762.60

Finding the Fourth Proportional to 129,125.10, 178,192.46 and 71,762.60

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Solution

The fourth proportional to 129,125.10, 178,192.46 and 71,762.60 is: 99,032.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,125.10 : 178,192.46 = 71,762.60 : x
  2. Step 2: Convert to fraction form
    129,125.10/178,192.46 = 71,762.60/x
  3. Step 3: Cross multiply
    129,125.10x = 178,192.46 × 71,762.60
  4. Step 4: Simplify right side
    129,125.10x = 12,787,554,854.88
  5. Step 5: Solve for x
    x = 12,787,554,854.88/129,125.10
  6. Step 6: Final answer
    x = 99,032.29

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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.