Home / 154,920.11-213,793.99-86,941.24

Finding the Fourth Proportional to 154,920.11, 213,793.99 and 86,941.24

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Solution

The fourth proportional to 154,920.11, 213,793.99 and 86,941.24 is: 119,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,920.11 : 213,793.99 = 86,941.24 : x
  2. Step 2: Convert to fraction form
    154,920.11/213,793.99 = 86,941.24/x
  3. Step 3: Cross multiply
    154,920.11x = 213,793.99 × 86,941.24
  4. Step 4: Simplify right side
    154,920.11x = 18,587,513,843.31
  5. Step 5: Solve for x
    x = 18,587,513,843.31/154,920.11
  6. Step 6: Final answer
    x = 119,981.29

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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.