Home / 129,369.60-178,471-93,502.80

Finding the Fourth Proportional to 129,369.60, 178,471 and 93,502.80

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Solution

The fourth proportional to 129,369.60, 178,471 and 93,502.80 is: 128,991.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,369.60 : 178,471 = 93,502.80 : x
  2. Step 2: Convert to fraction form
    129,369.60/178,471 = 93,502.80/x
  3. Step 3: Cross multiply
    129,369.60x = 178,471 × 93,502.80
  4. Step 4: Simplify right side
    129,369.60x = 16,687,538,218.80
  5. Step 5: Solve for x
    x = 16,687,538,218.80/129,369.60
  6. Step 6: Final answer
    x = 128,991.19

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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.