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Finding the Fourth Proportional to 92,220.20, 138,330.30 and 86,679.80

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Solution

The fourth proportional to 92,220.20, 138,330.30 and 86,679.80 is: 130,019.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,220.20 : 138,330.30 = 86,679.80 : x
  2. Step 2: Convert to fraction form
    92,220.20/138,330.30 = 86,679.80/x
  3. Step 3: Cross multiply
    92,220.20x = 138,330.30 × 86,679.80
  4. Step 4: Simplify right side
    92,220.20x = 11,990,442,737.94
  5. Step 5: Solve for x
    x = 11,990,442,737.94/92,220.20
  6. Step 6: Final answer
    x = 130,019.70

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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.