Home / 99,120.11-136,781.66-53,796.42

Finding the Fourth Proportional to 99,120.11, 136,781.66 and 53,796.42

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Solution

The fourth proportional to 99,120.11, 136,781.66 and 53,796.42 is: 74,236.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,120.11 : 136,781.66 = 53,796.42 : x
  2. Step 2: Convert to fraction form
    99,120.11/136,781.66 = 53,796.42/x
  3. Step 3: Cross multiply
    99,120.11x = 136,781.66 × 53,796.42
  4. Step 4: Simplify right side
    99,120.11x = 7,358,363,764.15
  5. Step 5: Solve for x
    x = 7,358,363,764.15/99,120.11
  6. Step 6: Final answer
    x = 74,236.84

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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.