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Finding the Fourth Proportional to 120,479.94, 166,269.63 and 69,491.76

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Solution

The fourth proportional to 120,479.94, 166,269.63 and 69,491.76 is: 95,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,479.94 : 166,269.63 = 69,491.76 : x
  2. Step 2: Convert to fraction form
    120,479.94/166,269.63 = 69,491.76/x
  3. Step 3: Cross multiply
    120,479.94x = 166,269.63 × 69,491.76
  4. Step 4: Simplify right side
    120,479.94x = 11,554,369,223.25
  5. Step 5: Solve for x
    x = 11,554,369,223.25/120,479.94
  6. Step 6: Final answer
    x = 95,902.85

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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.