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Finding the Fourth Proportional to 100,543.59, 150,815.25 and 25,663.73

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Solution

The fourth proportional to 100,543.59, 150,815.25 and 25,663.73 is: 38,495.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,543.59 : 150,815.25 = 25,663.73 : x
  2. Step 2: Convert to fraction form
    100,543.59/150,815.25 = 25,663.73/x
  3. Step 3: Cross multiply
    100,543.59x = 150,815.25 × 25,663.73
  4. Step 4: Simplify right side
    100,543.59x = 3,870,481,101.81
  5. Step 5: Solve for x
    x = 3,870,481,101.81/100,543.59
  6. Step 6: Final answer
    x = 38,495.55

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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.