Home / 143,999.52-198,719.91-80,340

Finding the Fourth Proportional to 143,999.52, 198,719.91 and 80,340

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Solution

The fourth proportional to 143,999.52, 198,719.91 and 80,340 is: 110,869.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,999.52 : 198,719.91 = 80,340 : x
  2. Step 2: Convert to fraction form
    143,999.52/198,719.91 = 80,340/x
  3. Step 3: Cross multiply
    143,999.52x = 198,719.91 × 80,340
  4. Step 4: Simplify right side
    143,999.52x = 15,965,157,569.40
  5. Step 5: Solve for x
    x = 15,965,157,569.40/143,999.52
  6. Step 6: Final answer
    x = 110,869.52

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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.