Home / 143,552.42-198,100.40-79,890.20

Finding the Fourth Proportional to 143,552.42, 198,100.40 and 79,890.20

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Solution

The fourth proportional to 143,552.42, 198,100.40 and 79,890.20 is: 110,247.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,552.42 : 198,100.40 = 79,890.20 : x
  2. Step 2: Convert to fraction form
    143,552.42/198,100.40 = 79,890.20/x
  3. Step 3: Cross multiply
    143,552.42x = 198,100.40 × 79,890.20
  4. Step 4: Simplify right side
    143,552.42x = 15,826,279,585.58
  5. Step 5: Solve for x
    x = 15,826,279,585.58/143,552.42
  6. Step 6: Final answer
    x = 110,247.39

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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.