Home / 170,431,499.20-255,647,248.80-142,087,979.20

Finding the Fourth Proportional to 170,431,499.20, 255,647,248.80 and 142,087,979.20

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Solution

The fourth proportional to 170,431,499.20, 255,647,248.80 and 142,087,979.20 is: 213,131,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,431,499.20 : 255,647,248.80 = 142,087,979.20 : x
  2. Step 2: Convert to fraction form
    170,431,499.20/255,647,248.80 = 142,087,979.20/x
  3. Step 3: Cross multiply
    170,431,499.20x = 255,647,248.80 × 142,087,979.20
  4. Step 4: Simplify right side
    170,431,499.20x = 36,324,400,970,031,624
  5. Step 5: Solve for x
    x = 36,324,400,970,031,624/170,431,499.20
  6. Step 6: Final answer
    x = 213,131,968.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.