Home / 138,584.16-191,095.68-88,218.72

Finding the Fourth Proportional to 138,584.16, 191,095.68 and 88,218.72

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Solution

The fourth proportional to 138,584.16, 191,095.68 and 88,218.72 is: 121,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,584.16 : 191,095.68 = 88,218.72 : x
  2. Step 2: Convert to fraction form
    138,584.16/191,095.68 = 88,218.72/x
  3. Step 3: Cross multiply
    138,584.16x = 191,095.68 × 88,218.72
  4. Step 4: Simplify right side
    138,584.16x = 16,858,216,287.13
  5. Step 5: Solve for x
    x = 16,858,216,287.13/138,584.16
  6. Step 6: Final answer
    x = 121,646.05

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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.