Home / 158,134.11-218,221.33-86,514.72

Finding the Fourth Proportional to 158,134.11, 218,221.33 and 86,514.72

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Solution

The fourth proportional to 158,134.11, 218,221.33 and 86,514.72 is: 119,388.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,134.11 : 218,221.33 = 86,514.72 : x
  2. Step 2: Convert to fraction form
    158,134.11/218,221.33 = 86,514.72/x
  3. Step 3: Cross multiply
    158,134.11x = 218,221.33 × 86,514.72
  4. Step 4: Simplify right side
    158,134.11x = 18,879,357,618.07
  5. Step 5: Solve for x
    x = 18,879,357,618.07/158,134.11
  6. Step 6: Final answer
    x = 119,388.27

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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.