Home / 109,613.72-151,259.78-61,860.57

Finding the Fourth Proportional to 109,613.72, 151,259.78 and 61,860.57

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Solution

The fourth proportional to 109,613.72, 151,259.78 and 61,860.57 is: 85,363.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,613.72 : 151,259.78 = 61,860.57 : x
  2. Step 2: Convert to fraction form
    109,613.72/151,259.78 = 61,860.57/x
  3. Step 3: Cross multiply
    109,613.72x = 151,259.78 × 61,860.57
  4. Step 4: Simplify right side
    109,613.72x = 9,357,016,363.53
  5. Step 5: Solve for x
    x = 9,357,016,363.53/109,613.72
  6. Step 6: Final answer
    x = 85,363.55

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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.