Home / 120,118.55-165,750.91-66,394.89

Finding the Fourth Proportional to 120,118.55, 165,750.91 and 66,394.89

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Solution

The fourth proportional to 120,118.55, 165,750.91 and 66,394.89 is: 91,617.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,118.55 : 165,750.91 = 66,394.89 : x
  2. Step 2: Convert to fraction form
    120,118.55/165,750.91 = 66,394.89/x
  3. Step 3: Cross multiply
    120,118.55x = 165,750.91 × 66,394.89
  4. Step 4: Simplify right side
    120,118.55x = 11,005,013,270.86
  5. Step 5: Solve for x
    x = 11,005,013,270.86/120,118.55
  6. Step 6: Final answer
    x = 91,617.94

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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.