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Finding the Fourth Proportional to 100,963.70, 151,445.55 and 77,344.10

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Solution

The fourth proportional to 100,963.70, 151,445.55 and 77,344.10 is: 116,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,963.70 : 151,445.55 = 77,344.10 : x
  2. Step 2: Convert to fraction form
    100,963.70/151,445.55 = 77,344.10/x
  3. Step 3: Cross multiply
    100,963.70x = 151,445.55 × 77,344.10
  4. Step 4: Simplify right side
    100,963.70x = 11,713,419,763.76
  5. Step 5: Solve for x
    x = 11,713,419,763.76/100,963.70
  6. Step 6: Final answer
    x = 116,016.15

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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.