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Finding the Fourth Proportional to 101.86, 140.58 and 63.04

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Solution

The fourth proportional to 101.86, 140.58 and 63.04 is: 87.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.86 : 140.58 = 63.04 : x
  2. Step 2: Convert to fraction form
    101.86/140.58 = 63.04/x
  3. Step 3: Cross multiply
    101.86x = 140.58 × 63.04
  4. Step 4: Simplify right side
    101.86x = 8,862.16
  5. Step 5: Solve for x
    x = 8,862.16/101.86
  6. Step 6: Final answer
    x = 87.00

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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.