Home / 125,440.20-188,160.30-115,331.40

Finding the Fourth Proportional to 125,440.20, 188,160.30 and 115,331.40

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Solution

The fourth proportional to 125,440.20, 188,160.30 and 115,331.40 is: 172,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,440.20 : 188,160.30 = 115,331.40 : x
  2. Step 2: Convert to fraction form
    125,440.20/188,160.30 = 115,331.40/x
  3. Step 3: Cross multiply
    125,440.20x = 188,160.30 × 115,331.40
  4. Step 4: Simplify right side
    125,440.20x = 21,700,790,823.42
  5. Step 5: Solve for x
    x = 21,700,790,823.42/125,440.20
  6. Step 6: Final answer
    x = 172,997.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.