Home / 143,749.89-198,374.91-80,091.84

Finding the Fourth Proportional to 143,749.89, 198,374.91 and 80,091.84

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Solution

The fourth proportional to 143,749.89, 198,374.91 and 80,091.84 is: 110,526.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,749.89 : 198,374.91 = 80,091.84 : x
  2. Step 2: Convert to fraction form
    143,749.89/198,374.91 = 80,091.84/x
  3. Step 3: Cross multiply
    143,749.89x = 198,374.91 × 80,091.84
  4. Step 4: Simplify right side
    143,749.89x = 15,888,211,551.73
  5. Step 5: Solve for x
    x = 15,888,211,551.73/143,749.89
  6. Step 6: Final answer
    x = 110,526.77

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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.