Home / 118,721.19-163,835.25-65,009.49

Finding the Fourth Proportional to 118,721.19, 163,835.25 and 65,009.49

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Solution

The fourth proportional to 118,721.19, 163,835.25 and 65,009.49 is: 89,713.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,721.19 : 163,835.25 = 65,009.49 : x
  2. Step 2: Convert to fraction form
    118,721.19/163,835.25 = 65,009.49/x
  3. Step 3: Cross multiply
    118,721.19x = 163,835.25 × 65,009.49
  4. Step 4: Simplify right side
    118,721.19x = 10,650,846,046.52
  5. Step 5: Solve for x
    x = 10,650,846,046.52/118,721.19
  6. Step 6: Final answer
    x = 89,713.10

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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.