Home / 109,613.35-151,262.64-61,217.78

Finding the Fourth Proportional to 109,613.35, 151,262.64 and 61,217.78

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Solution

The fourth proportional to 109,613.35, 151,262.64 and 61,217.78 is: 84,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,613.35 : 151,262.64 = 61,217.78 : x
  2. Step 2: Convert to fraction form
    109,613.35/151,262.64 = 61,217.78/x
  3. Step 3: Cross multiply
    109,613.35x = 151,262.64 × 61,217.78
  4. Step 4: Simplify right side
    109,613.35x = 9,259,962,261.43
  5. Step 5: Solve for x
    x = 9,259,962,261.43/109,613.35
  6. Step 6: Final answer
    x = 84,478.42

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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.