Home / 122,489.44-169,031.05-68,776.72

Finding the Fourth Proportional to 122,489.44, 169,031.05 and 68,776.72

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Solution

The fourth proportional to 122,489.44, 169,031.05 and 68,776.72 is: 94,909.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,489.44 : 169,031.05 = 68,776.72 : x
  2. Step 2: Convert to fraction form
    122,489.44/169,031.05 = 68,776.72/x
  3. Step 3: Cross multiply
    122,489.44x = 169,031.05 × 68,776.72
  4. Step 4: Simplify right side
    122,489.44x = 11,625,401,197.16
  5. Step 5: Solve for x
    x = 11,625,401,197.16/122,489.44
  6. Step 6: Final answer
    x = 94,909.42

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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.