Home / 101,628.20-152,387.31-80,702.87

Finding the Fourth Proportional to 101,628.20, 152,387.31 and 80,702.87

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Solution

The fourth proportional to 101,628.20, 152,387.31 and 80,702.87 is: 121,010.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,628.20 : 152,387.31 = 80,702.87 : x
  2. Step 2: Convert to fraction form
    101,628.20/152,387.31 = 80,702.87/x
  3. Step 3: Cross multiply
    101,628.20x = 152,387.31 × 80,702.87
  4. Step 4: Simplify right side
    101,628.20x = 12,298,092,506.64
  5. Step 5: Solve for x
    x = 12,298,092,506.64/101,628.20
  6. Step 6: Final answer
    x = 121,010.64

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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.