Home / 109,020.80-150,475.20-66,615.04

Finding the Fourth Proportional to 109,020.80, 150,475.20 and 66,615.04

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Solution

The fourth proportional to 109,020.80, 150,475.20 and 66,615.04 is: 91,944.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,020.80 : 150,475.20 = 66,615.04 : x
  2. Step 2: Convert to fraction form
    109,020.80/150,475.20 = 66,615.04/x
  3. Step 3: Cross multiply
    109,020.80x = 150,475.20 × 66,615.04
  4. Step 4: Simplify right side
    109,020.80x = 10,023,911,467.01
  5. Step 5: Solve for x
    x = 10,023,911,467.01/109,020.80
  6. Step 6: Final answer
    x = 91,944.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.