Home / 142,916.43-197,228.29-80,821.95

Finding the Fourth Proportional to 142,916.43, 197,228.29 and 80,821.95

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Solution

The fourth proportional to 142,916.43, 197,228.29 and 80,821.95 is: 111,536.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,916.43 : 197,228.29 = 80,821.95 : x
  2. Step 2: Convert to fraction form
    142,916.43/197,228.29 = 80,821.95/x
  3. Step 3: Cross multiply
    142,916.43x = 197,228.29 × 80,821.95
  4. Step 4: Simplify right side
    142,916.43x = 15,940,375,539.57
  5. Step 5: Solve for x
    x = 15,940,375,539.57/142,916.43
  6. Step 6: Final answer
    x = 111,536.34

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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.