Home / 122,686.48-169,310.64-68,976.40

Finding the Fourth Proportional to 122,686.48, 169,310.64 and 68,976.40

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Solution

The fourth proportional to 122,686.48, 169,310.64 and 68,976.40 is: 95,189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,686.48 : 169,310.64 = 68,976.40 : x
  2. Step 2: Convert to fraction form
    122,686.48/169,310.64 = 68,976.40/x
  3. Step 3: Cross multiply
    122,686.48x = 169,310.64 × 68,976.40
  4. Step 4: Simplify right side
    122,686.48x = 11,678,438,428.90
  5. Step 5: Solve for x
    x = 11,678,438,428.90/122,686.48
  6. Step 6: Final answer
    x = 95,189.29

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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.