Home / 140,278.92-193,585.59-76,617.78

Finding the Fourth Proportional to 140,278.92, 193,585.59 and 76,617.78

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Solution

The fourth proportional to 140,278.92, 193,585.59 and 76,617.78 is: 105,732.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,278.92 : 193,585.59 = 76,617.78 : x
  2. Step 2: Convert to fraction form
    140,278.92/193,585.59 = 76,617.78/x
  3. Step 3: Cross multiply
    140,278.92x = 193,585.59 × 76,617.78
  4. Step 4: Simplify right side
    140,278.92x = 14,832,098,145.79
  5. Step 5: Solve for x
    x = 14,832,098,145.79/140,278.92
  6. Step 6: Final answer
    x = 105,732.91

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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.