Home / 118,813.13-163,921.12-67,789.04

Finding the Fourth Proportional to 118,813.13, 163,921.12 and 67,789.04

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Solution

The fourth proportional to 118,813.13, 163,921.12 and 67,789.04 is: 93,525.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,813.13 : 163,921.12 = 67,789.04 : x
  2. Step 2: Convert to fraction form
    118,813.13/163,921.12 = 67,789.04/x
  3. Step 3: Cross multiply
    118,813.13x = 163,921.12 × 67,789.04
  4. Step 4: Simplify right side
    118,813.13x = 11,112,054,371.45
  5. Step 5: Solve for x
    x = 11,112,054,371.45/118,813.13
  6. Step 6: Final answer
    x = 93,525.48

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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.