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Finding the Fourth Proportional to 140,486.77, 193,872.77 and 79,233.76

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Solution

The fourth proportional to 140,486.77, 193,872.77 and 79,233.76 is: 109,343.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,486.77 : 193,872.77 = 79,233.76 : x
  2. Step 2: Convert to fraction form
    140,486.77/193,872.77 = 79,233.76/x
  3. Step 3: Cross multiply
    140,486.77x = 193,872.77 × 79,233.76
  4. Step 4: Simplify right side
    140,486.77x = 15,361,268,528.72
  5. Step 5: Solve for x
    x = 15,361,268,528.72/140,486.77
  6. Step 6: Final answer
    x = 109,343.17

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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.