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Finding the Fourth Proportional to 78,127.84, 117,195 and 22,723.84

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Solution

The fourth proportional to 78,127.84, 117,195 and 22,723.84 is: 34,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,127.84 : 117,195 = 22,723.84 : x
  2. Step 2: Convert to fraction form
    78,127.84/117,195 = 22,723.84/x
  3. Step 3: Cross multiply
    78,127.84x = 117,195 × 22,723.84
  4. Step 4: Simplify right side
    78,127.84x = 2,663,120,428.80
  5. Step 5: Solve for x
    x = 2,663,120,428.80/78,127.84
  6. Step 6: Final answer
    x = 34,086.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.