Home / 120,118.24-165,748.63-66,404.15

Finding the Fourth Proportional to 120,118.24, 165,748.63 and 66,404.15

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Solution

The fourth proportional to 120,118.24, 165,748.63 and 66,404.15 is: 91,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,118.24 : 165,748.63 = 66,404.15 : x
  2. Step 2: Convert to fraction form
    120,118.24/165,748.63 = 66,404.15/x
  3. Step 3: Cross multiply
    120,118.24x = 165,748.63 × 66,404.15
  4. Step 4: Simplify right side
    120,118.24x = 11,006,397,572.46
  5. Step 5: Solve for x
    x = 11,006,397,572.46/120,118.24
  6. Step 6: Final answer
    x = 91,629.69

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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.