Home / 120,291.46-165,983.91-68,609

Finding the Fourth Proportional to 120,291.46, 165,983.91 and 68,609

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Solution

The fourth proportional to 120,291.46, 165,983.91 and 68,609 is: 94,669.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,291.46 : 165,983.91 = 68,609 : x
  2. Step 2: Convert to fraction form
    120,291.46/165,983.91 = 68,609/x
  3. Step 3: Cross multiply
    120,291.46x = 165,983.91 × 68,609
  4. Step 4: Simplify right side
    120,291.46x = 11,387,990,081.19
  5. Step 5: Solve for x
    x = 11,387,990,081.19/120,291.46
  6. Step 6: Final answer
    x = 94,669.98

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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.