Home / 129,577.48-178,711.20-108,800.80

Finding the Fourth Proportional to 129,577.48, 178,711.20 and 108,800.80

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Solution

The fourth proportional to 129,577.48, 178,711.20 and 108,800.80 is: 150,056.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,577.48 : 178,711.20 = 108,800.80 : x
  2. Step 2: Convert to fraction form
    129,577.48/178,711.20 = 108,800.80/x
  3. Step 3: Cross multiply
    129,577.48x = 178,711.20 × 108,800.80
  4. Step 4: Simplify right side
    129,577.48x = 19,443,921,528.96
  5. Step 5: Solve for x
    x = 19,443,921,528.96/129,577.48
  6. Step 6: Final answer
    x = 150,056.33

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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.