Home / 198,889.32-298,061.28-105,207.96

Finding the Fourth Proportional to 198,889.32, 298,061.28 and 105,207.96

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Solution

The fourth proportional to 198,889.32, 298,061.28 and 105,207.96 is: 157,667.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,889.32 : 298,061.28 = 105,207.96 : x
  2. Step 2: Convert to fraction form
    198,889.32/298,061.28 = 105,207.96/x
  3. Step 3: Cross multiply
    198,889.32x = 298,061.28 × 105,207.96
  4. Step 4: Simplify right side
    198,889.32x = 31,358,419,223.79
  5. Step 5: Solve for x
    x = 31,358,419,223.79/198,889.32
  6. Step 6: Final answer
    x = 157,667.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.