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Finding the Fourth Proportional to 100,118.78, 138,150.28 and 59,824.02

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Solution

The fourth proportional to 100,118.78, 138,150.28 and 59,824.02 is: 82,549.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,118.78 : 138,150.28 = 59,824.02 : x
  2. Step 2: Convert to fraction form
    100,118.78/138,150.28 = 59,824.02/x
  3. Step 3: Cross multiply
    100,118.78x = 138,150.28 × 59,824.02
  4. Step 4: Simplify right side
    100,118.78x = 8,264,705,113.73
  5. Step 5: Solve for x
    x = 8,264,705,113.73/100,118.78
  6. Step 6: Final answer
    x = 82,549.00

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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.