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Finding the Fourth Proportional to 112,519.84, 168,843.12 and 77,487.52

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Solution

The fourth proportional to 112,519.84, 168,843.12 and 77,487.52 is: 116,274.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,519.84 : 168,843.12 = 77,487.52 : x
  2. Step 2: Convert to fraction form
    112,519.84/168,843.12 = 77,487.52/x
  3. Step 3: Cross multiply
    112,519.84x = 168,843.12 × 77,487.52
  4. Step 4: Simplify right side
    112,519.84x = 13,083,234,637.86
  5. Step 5: Solve for x
    x = 13,083,234,637.86/112,519.84
  6. Step 6: Final answer
    x = 116,274.91

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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.