Home / 146,020.12-219,031.92-57,315.40

Finding the Fourth Proportional to 146,020.12, 219,031.92 and 57,315.40

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Solution

The fourth proportional to 146,020.12, 219,031.92 and 57,315.40 is: 85,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,020.12 : 219,031.92 = 57,315.40 : x
  2. Step 2: Convert to fraction form
    146,020.12/219,031.92 = 57,315.40/x
  3. Step 3: Cross multiply
    146,020.12x = 219,031.92 × 57,315.40
  4. Step 4: Simplify right side
    146,020.12x = 12,553,902,107.57
  5. Step 5: Solve for x
    x = 12,553,902,107.57/146,020.12
  6. Step 6: Final answer
    x = 85,973.78

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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.