Home / 143,719.61-198,339.20-80,057.45

Finding the Fourth Proportional to 143,719.61, 198,339.20 and 80,057.45

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Solution

The fourth proportional to 143,719.61, 198,339.20 and 80,057.45 is: 110,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,719.61 : 198,339.20 = 80,057.45 : x
  2. Step 2: Convert to fraction form
    143,719.61/198,339.20 = 80,057.45/x
  3. Step 3: Cross multiply
    143,719.61x = 198,339.20 × 80,057.45
  4. Step 4: Simplify right side
    143,719.61x = 15,878,530,186.75
  5. Step 5: Solve for x
    x = 15,878,530,186.75/143,719.61
  6. Step 6: Final answer
    x = 110,482.70

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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.