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Finding the Fourth Proportional to 100,552.88, 138,747.54 and 58,103.20

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Solution

The fourth proportional to 100,552.88, 138,747.54 and 58,103.20 is: 80,173.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,552.88 : 138,747.54 = 58,103.20 : x
  2. Step 2: Convert to fraction form
    100,552.88/138,747.54 = 58,103.20/x
  3. Step 3: Cross multiply
    100,552.88x = 138,747.54 × 58,103.20
  4. Step 4: Simplify right side
    100,552.88x = 8,061,676,066.13
  5. Step 5: Solve for x
    x = 8,061,676,066.13/100,552.88
  6. Step 6: Final answer
    x = 80,173.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.