Home / 143,721.60-215,582.40-54,929.40

Finding the Fourth Proportional to 143,721.60, 215,582.40 and 54,929.40

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Solution

The fourth proportional to 143,721.60, 215,582.40 and 54,929.40 is: 82,394.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,721.60 : 215,582.40 = 54,929.40 : x
  2. Step 2: Convert to fraction form
    143,721.60/215,582.40 = 54,929.40/x
  3. Step 3: Cross multiply
    143,721.60x = 215,582.40 × 54,929.40
  4. Step 4: Simplify right side
    143,721.60x = 11,841,811,882.56
  5. Step 5: Solve for x
    x = 11,841,811,882.56/143,721.60
  6. Step 6: Final answer
    x = 82,394.10

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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.