Home / 143,971.05-198,684.28-80,307.48

Finding the Fourth Proportional to 143,971.05, 198,684.28 and 80,307.48

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Solution

The fourth proportional to 143,971.05, 198,684.28 and 80,307.48 is: 110,826.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,971.05 : 198,684.28 = 80,307.48 : x
  2. Step 2: Convert to fraction form
    143,971.05/198,684.28 = 80,307.48/x
  3. Step 3: Cross multiply
    143,971.05x = 198,684.28 × 80,307.48
  4. Step 4: Simplify right side
    143,971.05x = 15,955,833,842.41
  5. Step 5: Solve for x
    x = 15,955,833,842.41/143,971.05
  6. Step 6: Final answer
    x = 110,826.68

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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.