Home / 222,101.70-306,502.82-120,129.18

Finding the Fourth Proportional to 222,101.70, 306,502.82 and 120,129.18

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Solution

The fourth proportional to 222,101.70, 306,502.82 and 120,129.18 is: 165,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,101.70 : 306,502.82 = 120,129.18 : x
  2. Step 2: Convert to fraction form
    222,101.70/306,502.82 = 120,129.18/x
  3. Step 3: Cross multiply
    222,101.70x = 306,502.82 × 120,129.18
  4. Step 4: Simplify right side
    222,101.70x = 36,819,932,434.29
  5. Step 5: Solve for x
    x = 36,819,932,434.29/222,101.70
  6. Step 6: Final answer
    x = 165,779.61

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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.