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Finding the Fourth Proportional to 147,117.75, 220,761.75 and 61,720.96

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Solution

The fourth proportional to 147,117.75, 220,761.75 and 61,720.96 is: 92,617.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,117.75 : 220,761.75 = 61,720.96 : x
  2. Step 2: Convert to fraction form
    147,117.75/220,761.75 = 61,720.96/x
  3. Step 3: Cross multiply
    147,117.75x = 220,761.75 × 61,720.96
  4. Step 4: Simplify right side
    147,117.75x = 13,625,627,141.28
  5. Step 5: Solve for x
    x = 13,625,627,141.28/147,117.75
  6. Step 6: Final answer
    x = 92,617.15

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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.