Home / 154,508.13-213,231.93-86,530.71

Finding the Fourth Proportional to 154,508.13, 213,231.93 and 86,530.71

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Solution

The fourth proportional to 154,508.13, 213,231.93 and 86,530.71 is: 119,418.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,508.13 : 213,231.93 = 86,530.71 : x
  2. Step 2: Convert to fraction form
    154,508.13/213,231.93 = 86,530.71/x
  3. Step 3: Cross multiply
    154,508.13x = 213,231.93 × 86,530.71
  4. Step 4: Simplify right side
    154,508.13x = 18,451,110,297.57
  5. Step 5: Solve for x
    x = 18,451,110,297.57/154,508.13
  6. Step 6: Final answer
    x = 119,418.38

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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.