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Finding the Fourth Proportional to 92,151.20, 138,226.70 and 28,976.87

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Solution

The fourth proportional to 92,151.20, 138,226.70 and 28,976.87 is: 43,465.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,151.20 : 138,226.70 = 28,976.87 : x
  2. Step 2: Convert to fraction form
    92,151.20/138,226.70 = 28,976.87/x
  3. Step 3: Cross multiply
    92,151.20x = 138,226.70 × 28,976.87
  4. Step 4: Simplify right side
    92,151.20x = 4,005,377,534.44
  5. Step 5: Solve for x
    x = 4,005,377,534.44/92,151.20
  6. Step 6: Final answer
    x = 43,465.28

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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.