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Finding the Fourth Proportional to 112,294.80, 168,441.84 and 77,127.84

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Solution

The fourth proportional to 112,294.80, 168,441.84 and 77,127.84 is: 115,691.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,294.80 : 168,441.84 = 77,127.84 : x
  2. Step 2: Convert to fraction form
    112,294.80/168,441.84 = 77,127.84/x
  3. Step 3: Cross multiply
    112,294.80x = 168,441.84 × 77,127.84
  4. Step 4: Simplify right side
    112,294.80x = 12,991,555,284.83
  5. Step 5: Solve for x
    x = 12,991,555,284.83/112,294.80
  6. Step 6: Final answer
    x = 115,691.51

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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.