Home / 112,791.11-155,641.38-65,035.23

Finding the Fourth Proportional to 112,791.11, 155,641.38 and 65,035.23

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Solution

The fourth proportional to 112,791.11, 155,641.38 and 65,035.23 is: 89,742.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,791.11 : 155,641.38 = 65,035.23 : x
  2. Step 2: Convert to fraction form
    112,791.11/155,641.38 = 65,035.23/x
  3. Step 3: Cross multiply
    112,791.11x = 155,641.38 × 65,035.23
  4. Step 4: Simplify right side
    112,791.11x = 10,122,173,773.35
  5. Step 5: Solve for x
    x = 10,122,173,773.35/112,791.11
  6. Step 6: Final answer
    x = 89,742.65

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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.