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Finding the Fourth Proportional to 99,159.75, 148,739.63 and 25,287.75

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Solution

The fourth proportional to 99,159.75, 148,739.63 and 25,287.75 is: 37,931.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,159.75 : 148,739.63 = 25,287.75 : x
  2. Step 2: Convert to fraction form
    99,159.75/148,739.63 = 25,287.75/x
  3. Step 3: Cross multiply
    99,159.75x = 148,739.63 × 25,287.75
  4. Step 4: Simplify right side
    99,159.75x = 3,761,290,452.09
  5. Step 5: Solve for x
    x = 3,761,290,452.09/99,159.75
  6. Step 6: Final answer
    x = 37,931.63

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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.