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Finding the Fourth Proportional to 101,407.97, 152,128.35 and 42,249.62

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Solution

The fourth proportional to 101,407.97, 152,128.35 and 42,249.62 is: 63,381.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,407.97 : 152,128.35 = 42,249.62 : x
  2. Step 2: Convert to fraction form
    101,407.97/152,128.35 = 42,249.62/x
  3. Step 3: Cross multiply
    101,407.97x = 152,128.35 × 42,249.62
  4. Step 4: Simplify right side
    101,407.97x = 6,427,364,218.09
  5. Step 5: Solve for x
    x = 6,427,364,218.09/101,407.97
  6. Step 6: Final answer
    x = 63,381.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.