Home / 99,012.92-136,406.84-81,002.97

Finding the Fourth Proportional to 99,012.92, 136,406.84 and 81,002.97

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Solution

The fourth proportional to 99,012.92, 136,406.84 and 81,002.97 is: 111,595.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,012.92 : 136,406.84 = 81,002.97 : x
  2. Step 2: Convert to fraction form
    99,012.92/136,406.84 = 81,002.97/x
  3. Step 3: Cross multiply
    99,012.92x = 136,406.84 × 81,002.97
  4. Step 4: Simplify right side
    99,012.92x = 11,049,358,763.30
  5. Step 5: Solve for x
    x = 11,049,358,763.30/99,012.92
  6. Step 6: Final answer
    x = 111,595.13

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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.