Home / 120,818.52-166,719.81-69,834.57

Finding the Fourth Proportional to 120,818.52, 166,719.81 and 69,834.57

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Solution

The fourth proportional to 120,818.52, 166,719.81 and 69,834.57 is: 96,366.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,818.52 : 166,719.81 = 69,834.57 : x
  2. Step 2: Convert to fraction form
    120,818.52/166,719.81 = 69,834.57/x
  3. Step 3: Cross multiply
    120,818.52x = 166,719.81 × 69,834.57
  4. Step 4: Simplify right side
    120,818.52x = 11,642,806,241.83
  5. Step 5: Solve for x
    x = 11,642,806,241.83/120,818.52
  6. Step 6: Final answer
    x = 96,366.07

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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.