Home / 147,118.65-203,021.82-86,691.84

Finding the Fourth Proportional to 147,118.65, 203,021.82 and 86,691.84

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Solution

The fourth proportional to 147,118.65, 203,021.82 and 86,691.84 is: 119,633.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,118.65 : 203,021.82 = 86,691.84 : x
  2. Step 2: Convert to fraction form
    147,118.65/203,021.82 = 86,691.84/x
  3. Step 3: Cross multiply
    147,118.65x = 203,021.82 × 86,691.84
  4. Step 4: Simplify right side
    147,118.65x = 17,600,335,135.95
  5. Step 5: Solve for x
    x = 17,600,335,135.95/147,118.65
  6. Step 6: Final answer
    x = 119,633.61

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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.