Home / 154,514.04-213,211.75-86,521.56

Finding the Fourth Proportional to 154,514.04, 213,211.75 and 86,521.56

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Solution

The fourth proportional to 154,514.04, 213,211.75 and 86,521.56 is: 119,389.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,514.04 : 213,211.75 = 86,521.56 : x
  2. Step 2: Convert to fraction form
    154,514.04/213,211.75 = 86,521.56/x
  3. Step 3: Cross multiply
    154,514.04x = 213,211.75 × 86,521.56
  4. Step 4: Simplify right side
    154,514.04x = 18,447,413,220.33
  5. Step 5: Solve for x
    x = 18,447,413,220.33/154,514.04
  6. Step 6: Final answer
    x = 119,389.88

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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.