Home / 230,757.60-318,432.20-128,775.06

Finding the Fourth Proportional to 230,757.60, 318,432.20 and 128,775.06

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Solution

The fourth proportional to 230,757.60, 318,432.20 and 128,775.06 is: 177,702.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,757.60 : 318,432.20 = 128,775.06 : x
  2. Step 2: Convert to fraction form
    230,757.60/318,432.20 = 128,775.06/x
  3. Step 3: Cross multiply
    230,757.60x = 318,432.20 × 128,775.06
  4. Step 4: Simplify right side
    230,757.60x = 41,006,125,660.93
  5. Step 5: Solve for x
    x = 41,006,125,660.93/230,757.60
  6. Step 6: Final answer
    x = 177,702.17

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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.