Home / 143,139.52-197,541.48-82,721.20

Finding the Fourth Proportional to 143,139.52, 197,541.48 and 82,721.20

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Solution

The fourth proportional to 143,139.52, 197,541.48 and 82,721.20 is: 114,160.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,139.52 : 197,541.48 = 82,721.20 : x
  2. Step 2: Convert to fraction form
    143,139.52/197,541.48 = 82,721.20/x
  3. Step 3: Cross multiply
    143,139.52x = 197,541.48 × 82,721.20
  4. Step 4: Simplify right side
    143,139.52x = 16,340,868,275.38
  5. Step 5: Solve for x
    x = 16,340,868,275.38/143,139.52
  6. Step 6: Final answer
    x = 114,160.42

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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.