Home / 120,467.02-166,248.78-72,711.04

Finding the Fourth Proportional to 120,467.02, 166,248.78 and 72,711.04

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Solution

The fourth proportional to 120,467.02, 166,248.78 and 72,711.04 is: 100,343.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,467.02 : 166,248.78 = 72,711.04 : x
  2. Step 2: Convert to fraction form
    120,467.02/166,248.78 = 72,711.04/x
  3. Step 3: Cross multiply
    120,467.02x = 166,248.78 × 72,711.04
  4. Step 4: Simplify right side
    120,467.02x = 12,088,121,692.53
  5. Step 5: Solve for x
    x = 12,088,121,692.53/120,467.02
  6. Step 6: Final answer
    x = 100,343.83

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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.