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Finding the Fourth Proportional to 88,853.20, 133,352.70 and 85,937.20

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Solution

The fourth proportional to 88,853.20, 133,352.70 and 85,937.20 is: 128,976.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,853.20 : 133,352.70 = 85,937.20 : x
  2. Step 2: Convert to fraction form
    88,853.20/133,352.70 = 85,937.20/x
  3. Step 3: Cross multiply
    88,853.20x = 133,352.70 × 85,937.20
  4. Step 4: Simplify right side
    88,853.20x = 11,459,957,650.44
  5. Step 5: Solve for x
    x = 11,459,957,650.44/88,853.20
  6. Step 6: Final answer
    x = 128,976.31

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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.