Home / 127,630.45-176,127.10-79,910.11

Finding the Fourth Proportional to 127,630.45, 176,127.10 and 79,910.11

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Solution

The fourth proportional to 127,630.45, 176,127.10 and 79,910.11 is: 110,274.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,630.45 : 176,127.10 = 79,910.11 : x
  2. Step 2: Convert to fraction form
    127,630.45/176,127.10 = 79,910.11/x
  3. Step 3: Cross multiply
    127,630.45x = 176,127.10 × 79,910.11
  4. Step 4: Simplify right side
    127,630.45x = 14,074,335,934.98
  5. Step 5: Solve for x
    x = 14,074,335,934.98/127,630.45
  6. Step 6: Final answer
    x = 110,274.12

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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.