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Finding the Fourth Proportional to 88,920.60, 133,380.90 and 84,838.20

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Solution

The fourth proportional to 88,920.60, 133,380.90 and 84,838.20 is: 127,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,920.60 : 133,380.90 = 84,838.20 : x
  2. Step 2: Convert to fraction form
    88,920.60/133,380.90 = 84,838.20/x
  3. Step 3: Cross multiply
    88,920.60x = 133,380.90 × 84,838.20
  4. Step 4: Simplify right side
    88,920.60x = 11,315,795,470.38
  5. Step 5: Solve for x
    x = 11,315,795,470.38/88,920.60
  6. Step 6: Final answer
    x = 127,257.30

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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.