Home / 136,717.82-188,710.19-79,370.02

Finding the Fourth Proportional to 136,717.82, 188,710.19 and 79,370.02

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Solution

The fourth proportional to 136,717.82, 188,710.19 and 79,370.02 is: 109,553.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,717.82 : 188,710.19 = 79,370.02 : x
  2. Step 2: Convert to fraction form
    136,717.82/188,710.19 = 79,370.02/x
  3. Step 3: Cross multiply
    136,717.82x = 188,710.19 × 79,370.02
  4. Step 4: Simplify right side
    136,717.82x = 14,977,931,281.15
  5. Step 5: Solve for x
    x = 14,977,931,281.15/136,717.82
  6. Step 6: Final answer
    x = 109,553.62

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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.