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Finding the Fourth Proportional to 140,578.80, 194,003.52 and 80,158.32

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Solution

The fourth proportional to 140,578.80, 194,003.52 and 80,158.32 is: 110,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,578.80 : 194,003.52 = 80,158.32 : x
  2. Step 2: Convert to fraction form
    140,578.80/194,003.52 = 80,158.32/x
  3. Step 3: Cross multiply
    140,578.80x = 194,003.52 × 80,158.32
  4. Step 4: Simplify right side
    140,578.80x = 15,550,996,237.29
  5. Step 5: Solve for x
    x = 15,550,996,237.29/140,578.80
  6. Step 6: Final answer
    x = 110,621.20

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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.