Home / 142,927.30-215,687.95-138,162.97

Finding the Fourth Proportional to 142,927.30, 215,687.95 and 138,162.97

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Solution

The fourth proportional to 142,927.30, 215,687.95 and 138,162.97 is: 208,498.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,927.30 : 215,687.95 = 138,162.97 : x
  2. Step 2: Convert to fraction form
    142,927.30/215,687.95 = 138,162.97/x
  3. Step 3: Cross multiply
    142,927.30x = 215,687.95 × 138,162.97
  4. Step 4: Simplify right side
    142,927.30x = 29,800,087,765.21
  5. Step 5: Solve for x
    x = 29,800,087,765.21/142,927.30
  6. Step 6: Final answer
    x = 208,498.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.