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Finding the Fourth Proportional to 98,747.80, 147,689.70 and 88,293.40

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Solution

The fourth proportional to 98,747.80, 147,689.70 and 88,293.40 is: 132,053.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,747.80 : 147,689.70 = 88,293.40 : x
  2. Step 2: Convert to fraction form
    98,747.80/147,689.70 = 88,293.40/x
  3. Step 3: Cross multiply
    98,747.80x = 147,689.70 × 88,293.40
  4. Step 4: Simplify right side
    98,747.80x = 13,040,025,757.98
  5. Step 5: Solve for x
    x = 13,040,025,757.98/98,747.80
  6. Step 6: Final answer
    x = 132,053.84

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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.