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Finding the Fourth Proportional to 100,557.85, 150,836.78 and 65,565.85

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Solution

The fourth proportional to 100,557.85, 150,836.78 and 65,565.85 is: 98,348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,557.85 : 150,836.78 = 65,565.85 : x
  2. Step 2: Convert to fraction form
    100,557.85/150,836.78 = 65,565.85/x
  3. Step 3: Cross multiply
    100,557.85x = 150,836.78 × 65,565.85
  4. Step 4: Simplify right side
    100,557.85x = 9,889,741,364.13
  5. Step 5: Solve for x
    x = 9,889,741,364.13/100,557.85
  6. Step 6: Final answer
    x = 98,348.78

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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.