Home / 120,861.78-166,742.73-89,106.18

Finding the Fourth Proportional to 120,861.78, 166,742.73 and 89,106.18

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Solution

The fourth proportional to 120,861.78, 166,742.73 and 89,106.18 is: 122,932.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,861.78 : 166,742.73 = 89,106.18 : x
  2. Step 2: Convert to fraction form
    120,861.78/166,742.73 = 89,106.18/x
  3. Step 3: Cross multiply
    120,861.78x = 166,742.73 × 89,106.18
  4. Step 4: Simplify right side
    120,861.78x = 14,857,807,713.07
  5. Step 5: Solve for x
    x = 14,857,807,713.07/120,861.78
  6. Step 6: Final answer
    x = 122,932.23

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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.