Home / 117,997.20-176,995.80-80,672.40

Finding the Fourth Proportional to 117,997.20, 176,995.80 and 80,672.40

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Solution

The fourth proportional to 117,997.20, 176,995.80 and 80,672.40 is: 121,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,997.20 : 176,995.80 = 80,672.40 : x
  2. Step 2: Convert to fraction form
    117,997.20/176,995.80 = 80,672.40/x
  3. Step 3: Cross multiply
    117,997.20x = 176,995.80 × 80,672.40
  4. Step 4: Simplify right side
    117,997.20x = 14,278,675,975.92
  5. Step 5: Solve for x
    x = 14,278,675,975.92/117,997.20
  6. Step 6: Final answer
    x = 121,008.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.