Home / 129,372.58-178,475.16-93,505.78

Finding the Fourth Proportional to 129,372.58, 178,475.16 and 93,505.78

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Solution

The fourth proportional to 129,372.58, 178,475.16 and 93,505.78 is: 128,995.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,372.58 : 178,475.16 = 93,505.78 : x
  2. Step 2: Convert to fraction form
    129,372.58/178,475.16 = 93,505.78/x
  3. Step 3: Cross multiply
    129,372.58x = 178,475.16 × 93,505.78
  4. Step 4: Simplify right side
    129,372.58x = 16,688,459,046.42
  5. Step 5: Solve for x
    x = 16,688,459,046.42/129,372.58
  6. Step 6: Final answer
    x = 128,995.33

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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.