Home / 120,853.11-181,341.09-54,279.66

Finding the Fourth Proportional to 120,853.11, 181,341.09 and 54,279.66

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Solution

The fourth proportional to 120,853.11, 181,341.09 and 54,279.66 is: 81,447.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,853.11 : 181,341.09 = 54,279.66 : x
  2. Step 2: Convert to fraction form
    120,853.11/181,341.09 = 54,279.66/x
  3. Step 3: Cross multiply
    120,853.11x = 181,341.09 × 54,279.66
  4. Step 4: Simplify right side
    120,853.11x = 9,843,132,709.23
  5. Step 5: Solve for x
    x = 9,843,132,709.23/120,853.11
  6. Step 6: Final answer
    x = 81,447.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.