Home / 99,309.38-137,032.68-58,449.20

Finding the Fourth Proportional to 99,309.38, 137,032.68 and 58,449.20

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Solution

The fourth proportional to 99,309.38, 137,032.68 and 58,449.20 is: 80,651.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,309.38 : 137,032.68 = 58,449.20 : x
  2. Step 2: Convert to fraction form
    99,309.38/137,032.68 = 58,449.20/x
  3. Step 3: Cross multiply
    99,309.38x = 137,032.68 × 58,449.20
  4. Step 4: Simplify right side
    99,309.38x = 8,009,450,519.86
  5. Step 5: Solve for x
    x = 8,009,450,519.86/99,309.38
  6. Step 6: Final answer
    x = 80,651.50

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1.5x scale

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.