Home / 152,078.20-209,860.14-85,010.20

Finding the Fourth Proportional to 152,078.20, 209,860.14 and 85,010.20

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Solution

The fourth proportional to 152,078.20, 209,860.14 and 85,010.20 is: 117,309.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,078.20 : 209,860.14 = 85,010.20 : x
  2. Step 2: Convert to fraction form
    152,078.20/209,860.14 = 85,010.20/x
  3. Step 3: Cross multiply
    152,078.20x = 209,860.14 × 85,010.20
  4. Step 4: Simplify right side
    152,078.20x = 17,840,252,473.43
  5. Step 5: Solve for x
    x = 17,840,252,473.43/152,078.20
  6. Step 6: Final answer
    x = 117,309.73

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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.