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Finding the Fourth Proportional to 120,045.66, 165,679.02 and 69,057.12

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Solution

The fourth proportional to 120,045.66, 165,679.02 and 69,057.12 is: 95,308.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,045.66 : 165,679.02 = 69,057.12 : x
  2. Step 2: Convert to fraction form
    120,045.66/165,679.02 = 69,057.12/x
  3. Step 3: Cross multiply
    120,045.66x = 165,679.02 × 69,057.12
  4. Step 4: Simplify right side
    120,045.66x = 11,441,315,965.62
  5. Step 5: Solve for x
    x = 11,441,315,965.62/120,045.66
  6. Step 6: Final answer
    x = 95,308.04

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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.