Home / 218,772.40-301,930.26-138,196.04

Finding the Fourth Proportional to 218,772.40, 301,930.26 and 138,196.04

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Solution

The fourth proportional to 218,772.40, 301,930.26 and 138,196.04 is: 190,725.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,772.40 : 301,930.26 = 138,196.04 : x
  2. Step 2: Convert to fraction form
    218,772.40/301,930.26 = 138,196.04/x
  3. Step 3: Cross multiply
    218,772.40x = 301,930.26 × 138,196.04
  4. Step 4: Simplify right side
    218,772.40x = 41,725,566,288.17
  5. Step 5: Solve for x
    x = 41,725,566,288.17/218,772.40
  6. Step 6: Final answer
    x = 190,725.92

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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.