Home / 209,619.88-289,348.32-124,735.12

Finding the Fourth Proportional to 209,619.88, 289,348.32 and 124,735.12

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Solution

The fourth proportional to 209,619.88, 289,348.32 and 124,735.12 is: 172,177.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,619.88 : 289,348.32 = 124,735.12 : x
  2. Step 2: Convert to fraction form
    209,619.88/289,348.32 = 124,735.12/x
  3. Step 3: Cross multiply
    209,619.88x = 289,348.32 × 124,735.12
  4. Step 4: Simplify right side
    209,619.88x = 36,091,897,417.00
  5. Step 5: Solve for x
    x = 36,091,897,417.00/209,619.88
  6. Step 6: Final answer
    x = 172,177.84

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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.