Home / 118,218.20-163,105.58-77,917.48

Finding the Fourth Proportional to 118,218.20, 163,105.58 and 77,917.48

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Solution

The fourth proportional to 118,218.20, 163,105.58 and 77,917.48 is: 107,502.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,218.20 : 163,105.58 = 77,917.48 : x
  2. Step 2: Convert to fraction form
    118,218.20/163,105.58 = 77,917.48/x
  3. Step 3: Cross multiply
    118,218.20x = 163,105.58 × 77,917.48
  4. Step 4: Simplify right side
    118,218.20x = 12,708,775,767.54
  5. Step 5: Solve for x
    x = 12,708,775,767.54/118,218.20
  6. Step 6: Final answer
    x = 107,502.70

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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.