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Finding the Fourth Proportional to 100,772.13, 150,269.13 and 99,872.76

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Solution

The fourth proportional to 100,772.13, 150,269.13 and 99,872.76 is: 148,928.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,772.13 : 150,269.13 = 99,872.76 : x
  2. Step 2: Convert to fraction form
    100,772.13/150,269.13 = 99,872.76/x
  3. Step 3: Cross multiply
    100,772.13x = 150,269.13 × 99,872.76
  4. Step 4: Simplify right side
    100,772.13x = 15,007,792,755.90
  5. Step 5: Solve for x
    x = 15,007,792,755.90/100,772.13
  6. Step 6: Final answer
    x = 148,928.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.