Home / 129,321.20-178,404.63-93,454.40

Finding the Fourth Proportional to 129,321.20, 178,404.63 and 93,454.40

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Solution

The fourth proportional to 129,321.20, 178,404.63 and 93,454.40 is: 128,924.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,321.20 : 178,404.63 = 93,454.40 : x
  2. Step 2: Convert to fraction form
    129,321.20/178,404.63 = 93,454.40/x
  3. Step 3: Cross multiply
    129,321.20x = 178,404.63 × 93,454.40
  4. Step 4: Simplify right side
    129,321.20x = 16,672,696,761.85
  5. Step 5: Solve for x
    x = 16,672,696,761.85/129,321.20
  6. Step 6: Final answer
    x = 128,924.70

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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.