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Finding the Fourth Proportional to 112,144.88, 154,759.40 and 61,843.88

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Solution

The fourth proportional to 112,144.88, 154,759.40 and 61,843.88 is: 85,344.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,144.88 : 154,759.40 = 61,843.88 : x
  2. Step 2: Convert to fraction form
    112,144.88/154,759.40 = 61,843.88/x
  3. Step 3: Cross multiply
    112,144.88x = 154,759.40 × 61,843.88
  4. Step 4: Simplify right side
    112,144.88x = 9,570,920,679.46
  5. Step 5: Solve for x
    x = 9,570,920,679.46/112,144.88
  6. Step 6: Final answer
    x = 85,344.25

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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.