Home / 143,771.04-198,407.34-80,112.72

Finding the Fourth Proportional to 143,771.04, 198,407.34 and 80,112.72

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Solution

The fourth proportional to 143,771.04, 198,407.34 and 80,112.72 is: 110,557.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,771.04 : 198,407.34 = 80,112.72 : x
  2. Step 2: Convert to fraction form
    143,771.04/198,407.34 = 80,112.72/x
  3. Step 3: Cross multiply
    143,771.04x = 198,407.34 × 80,112.72
  4. Step 4: Simplify right side
    143,771.04x = 15,894,951,675.36
  5. Step 5: Solve for x
    x = 15,894,951,675.36/143,771.04
  6. Step 6: Final answer
    x = 110,557.40

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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.