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Finding the Fourth Proportional to 135,641.40, 203,462.10 and 88,402.20

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Solution

The fourth proportional to 135,641.40, 203,462.10 and 88,402.20 is: 132,603.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,641.40 : 203,462.10 = 88,402.20 : x
  2. Step 2: Convert to fraction form
    135,641.40/203,462.10 = 88,402.20/x
  3. Step 3: Cross multiply
    135,641.40x = 203,462.10 × 88,402.20
  4. Step 4: Simplify right side
    135,641.40x = 17,986,497,256.62
  5. Step 5: Solve for x
    x = 17,986,497,256.62/135,641.40
  6. Step 6: Final answer
    x = 132,603.30

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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.