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Finding the Fourth Proportional to 123,253.88, 170,090.35 and 72,952.88

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Solution

The fourth proportional to 123,253.88, 170,090.35 and 72,952.88 is: 100,674.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,253.88 : 170,090.35 = 72,952.88 : x
  2. Step 2: Convert to fraction form
    123,253.88/170,090.35 = 72,952.88/x
  3. Step 3: Cross multiply
    123,253.88x = 170,090.35 × 72,952.88
  4. Step 4: Simplify right side
    123,253.88x = 12,408,579,859.87
  5. Step 5: Solve for x
    x = 12,408,579,859.87/123,253.88
  6. Step 6: Final answer
    x = 100,674.97

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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.