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Finding the Fourth Proportional to 103,614.80, 155,422.20 and 101,310.80

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Solution

The fourth proportional to 103,614.80, 155,422.20 and 101,310.80 is: 151,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,614.80 : 155,422.20 = 101,310.80 : x
  2. Step 2: Convert to fraction form
    103,614.80/155,422.20 = 101,310.80/x
  3. Step 3: Cross multiply
    103,614.80x = 155,422.20 × 101,310.80
  4. Step 4: Simplify right side
    103,614.80x = 15,745,947,419.76
  5. Step 5: Solve for x
    x = 15,745,947,419.76/103,614.80
  6. Step 6: Final answer
    x = 151,966.20

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1.5x scale

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.