Home / 99,104.06-136,761.12-56,659.88

Finding the Fourth Proportional to 99,104.06, 136,761.12 and 56,659.88

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Solution

The fourth proportional to 99,104.06, 136,761.12 and 56,659.88 is: 78,189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,104.06 : 136,761.12 = 56,659.88 : x
  2. Step 2: Convert to fraction form
    99,104.06/136,761.12 = 56,659.88/x
  3. Step 3: Cross multiply
    99,104.06x = 136,761.12 × 56,659.88
  4. Step 4: Simplify right side
    99,104.06x = 7,748,868,647.87
  5. Step 5: Solve for x
    x = 7,748,868,647.87/99,104.06
  6. Step 6: Final answer
    x = 78,189.21

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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.