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Finding the Fourth Proportional to 147,292.20, 220,938.30 and 84,911.40

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Solution

The fourth proportional to 147,292.20, 220,938.30 and 84,911.40 is: 127,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,292.20 : 220,938.30 = 84,911.40 : x
  2. Step 2: Convert to fraction form
    147,292.20/220,938.30 = 84,911.40/x
  3. Step 3: Cross multiply
    147,292.20x = 220,938.30 × 84,911.40
  4. Step 4: Simplify right side
    147,292.20x = 18,760,180,366.62
  5. Step 5: Solve for x
    x = 18,760,180,366.62/147,292.20
  6. Step 6: Final answer
    x = 127,367.10

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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.