Home / 127,972.90-192,117.30-80,587.90

Finding the Fourth Proportional to 127,972.90, 192,117.30 and 80,587.90

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Solution

The fourth proportional to 127,972.90, 192,117.30 and 80,587.90 is: 120,981.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,972.90 : 192,117.30 = 80,587.90 : x
  2. Step 2: Convert to fraction form
    127,972.90/192,117.30 = 80,587.90/x
  3. Step 3: Cross multiply
    127,972.90x = 192,117.30 × 80,587.90
  4. Step 4: Simplify right side
    127,972.90x = 15,482,329,760.67
  5. Step 5: Solve for x
    x = 15,482,329,760.67/127,972.90
  6. Step 6: Final answer
    x = 120,981.32

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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.