Home / 143,938.16-198,635.16-80,289.20

Finding the Fourth Proportional to 143,938.16, 198,635.16 and 80,289.20

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Solution

The fourth proportional to 143,938.16, 198,635.16 and 80,289.20 is: 110,799.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,938.16 : 198,635.16 = 80,289.20 : x
  2. Step 2: Convert to fraction form
    143,938.16/198,635.16 = 80,289.20/x
  3. Step 3: Cross multiply
    143,938.16x = 198,635.16 × 80,289.20
  4. Step 4: Simplify right side
    143,938.16x = 15,948,258,088.27
  5. Step 5: Solve for x
    x = 15,948,258,088.27/143,938.16
  6. Step 6: Final answer
    x = 110,799.37

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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.