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Finding the Fourth Proportional to 112,610.88, 155,261.88 and 72,253.44

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Solution

The fourth proportional to 112,610.88, 155,261.88 and 72,253.44 is: 99,619.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,610.88 : 155,261.88 = 72,253.44 : x
  2. Step 2: Convert to fraction form
    112,610.88/155,261.88 = 72,253.44/x
  3. Step 3: Cross multiply
    112,610.88x = 155,261.88 × 72,253.44
  4. Step 4: Simplify right side
    112,610.88x = 11,218,204,930.87
  5. Step 5: Solve for x
    x = 11,218,204,930.87/112,610.88
  6. Step 6: Final answer
    x = 99,619.19

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1.5x scale

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.