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Finding the Fourth Proportional to 199,402.12, 275,019.32 and 127,788.80

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Solution

The fourth proportional to 199,402.12, 275,019.32 and 127,788.80 is: 176,248.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,402.12 : 275,019.32 = 127,788.80 : x
  2. Step 2: Convert to fraction form
    199,402.12/275,019.32 = 127,788.80/x
  3. Step 3: Cross multiply
    199,402.12x = 275,019.32 × 127,788.80
  4. Step 4: Simplify right side
    199,402.12x = 35,144,388,879.62
  5. Step 5: Solve for x
    x = 35,144,388,879.62/199,402.12
  6. Step 6: Final answer
    x = 176,248.82

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1.5x scale

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.