Home / 143,934.60-215,610.30-81,532.20

Finding the Fourth Proportional to 143,934.60, 215,610.30 and 81,532.20

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Solution

The fourth proportional to 143,934.60, 215,610.30 and 81,532.20 is: 122,133.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,934.60 : 215,610.30 = 81,532.20 : x
  2. Step 2: Convert to fraction form
    143,934.60/215,610.30 = 81,532.20/x
  3. Step 3: Cross multiply
    143,934.60x = 215,610.30 × 81,532.20
  4. Step 4: Simplify right side
    143,934.60x = 17,579,182,101.66
  5. Step 5: Solve for x
    x = 17,579,182,101.66/143,934.60
  6. Step 6: Final answer
    x = 122,133.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.