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Finding the Fourth Proportional to 99,445.20, 149,128.20 and 32,866.80

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Solution

The fourth proportional to 99,445.20, 149,128.20 and 32,866.80 is: 49,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,445.20 : 149,128.20 = 32,866.80 : x
  2. Step 2: Convert to fraction form
    99,445.20/149,128.20 = 32,866.80/x
  3. Step 3: Cross multiply
    99,445.20x = 149,128.20 × 32,866.80
  4. Step 4: Simplify right side
    99,445.20x = 4,901,366,723.76
  5. Step 5: Solve for x
    x = 4,901,366,723.76/99,445.20
  6. Step 6: Final answer
    x = 49,287.11

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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.