Home / 118,979.13-164,191.19-68,678.13

Finding the Fourth Proportional to 118,979.13, 164,191.19 and 68,678.13

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Solution

The fourth proportional to 118,979.13, 164,191.19 and 68,678.13 is: 94,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,979.13 : 164,191.19 = 68,678.13 : x
  2. Step 2: Convert to fraction form
    118,979.13/164,191.19 = 68,678.13/x
  3. Step 3: Cross multiply
    118,979.13x = 164,191.19 × 68,678.13
  4. Step 4: Simplify right side
    118,979.13x = 11,276,343,891.67
  5. Step 5: Solve for x
    x = 11,276,343,891.67/118,979.13
  6. Step 6: Final answer
    x = 94,775.81

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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.