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Finding the Fourth Proportional to 112,143.82, 154,754.12 and 63,752.09

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Solution

The fourth proportional to 112,143.82, 154,754.12 and 63,752.09 is: 87,975.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,143.82 : 154,754.12 = 63,752.09 : x
  2. Step 2: Convert to fraction form
    112,143.82/154,754.12 = 63,752.09/x
  3. Step 3: Cross multiply
    112,143.82x = 154,754.12 × 63,752.09
  4. Step 4: Simplify right side
    112,143.82x = 9,865,898,227.66
  5. Step 5: Solve for x
    x = 9,865,898,227.66/112,143.82
  6. Step 6: Final answer
    x = 87,975.41

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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.