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Finding the Fourth Proportional to 100,598.38, 138,825.03 and 54,657.61

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Solution

The fourth proportional to 100,598.38, 138,825.03 and 54,657.61 is: 75,427.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,598.38 : 138,825.03 = 54,657.61 : x
  2. Step 2: Convert to fraction form
    100,598.38/138,825.03 = 54,657.61/x
  3. Step 3: Cross multiply
    100,598.38x = 138,825.03 × 54,657.61
  4. Step 4: Simplify right side
    100,598.38x = 7,587,844,347.98
  5. Step 5: Solve for x
    x = 7,587,844,347.98/100,598.38
  6. Step 6: Final answer
    x = 75,427.10

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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.