Home / 127,695.45-176,135.28-79,865.76

Finding the Fourth Proportional to 127,695.45, 176,135.28 and 79,865.76

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Solution

The fourth proportional to 127,695.45, 176,135.28 and 79,865.76 is: 110,161.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,695.45 : 176,135.28 = 79,865.76 : x
  2. Step 2: Convert to fraction form
    127,695.45/176,135.28 = 79,865.76/x
  3. Step 3: Cross multiply
    127,695.45x = 176,135.28 × 79,865.76
  4. Step 4: Simplify right side
    127,695.45x = 14,067,178,000.01
  5. Step 5: Solve for x
    x = 14,067,178,000.01/127,695.45
  6. Step 6: Final answer
    x = 110,161.94

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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.