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Finding the Fourth Proportional to 100,319.59, 150,479.67 and 25,439.78

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Solution

The fourth proportional to 100,319.59, 150,479.67 and 25,439.78 is: 38,159.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,319.59 : 150,479.67 = 25,439.78 : x
  2. Step 2: Convert to fraction form
    100,319.59/150,479.67 = 25,439.78/x
  3. Step 3: Cross multiply
    100,319.59x = 150,479.67 × 25,439.78
  4. Step 4: Simplify right side
    100,319.59x = 3,828,169,699.27
  5. Step 5: Solve for x
    x = 3,828,169,699.27/100,319.59
  6. Step 6: Final answer
    x = 38,159.74

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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.