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Finding the Fourth Proportional to 100,400.76, 150,400.32 and 60,397.68

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Solution

The fourth proportional to 100,400.76, 150,400.32 and 60,397.68 is: 90,475.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,400.76 : 150,400.32 = 60,397.68 : x
  2. Step 2: Convert to fraction form
    100,400.76/150,400.32 = 60,397.68/x
  3. Step 3: Cross multiply
    100,400.76x = 150,400.32 × 60,397.68
  4. Step 4: Simplify right side
    100,400.76x = 9,083,830,399.26
  5. Step 5: Solve for x
    x = 9,083,830,399.26/100,400.76
  6. Step 6: Final answer
    x = 90,475.71

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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.