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Finding the Fourth Proportional to 100,527.52, 138,745.04 and 58,110.64

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Solution

The fourth proportional to 100,527.52, 138,745.04 and 58,110.64 is: 80,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,527.52 : 138,745.04 = 58,110.64 : x
  2. Step 2: Convert to fraction form
    100,527.52/138,745.04 = 58,110.64/x
  3. Step 3: Cross multiply
    100,527.52x = 138,745.04 × 58,110.64
  4. Step 4: Simplify right side
    100,527.52x = 8,062,563,071.23
  5. Step 5: Solve for x
    x = 8,062,563,071.23/100,527.52
  6. Step 6: Final answer
    x = 80,202.55

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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.