Home / 119,802.30-165,380.31-77,381.52

Finding the Fourth Proportional to 119,802.30, 165,380.31 and 77,381.52

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Solution

The fourth proportional to 119,802.30, 165,380.31 and 77,381.52 is: 106,820.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,802.30 : 165,380.31 = 77,381.52 : x
  2. Step 2: Convert to fraction form
    119,802.30/165,380.31 = 77,381.52/x
  3. Step 3: Cross multiply
    119,802.30x = 165,380.31 × 77,381.52
  4. Step 4: Simplify right side
    119,802.30x = 12,797,379,765.87
  5. Step 5: Solve for x
    x = 12,797,379,765.87/119,802.30
  6. Step 6: Final answer
    x = 106,820.82

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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.