Home / 120,018.12-165,628.34-66,306.59

Finding the Fourth Proportional to 120,018.12, 165,628.34 and 66,306.59

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Solution

The fourth proportional to 120,018.12, 165,628.34 and 66,306.59 is: 91,504.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,018.12 : 165,628.34 = 66,306.59 : x
  2. Step 2: Convert to fraction form
    120,018.12/165,628.34 = 66,306.59/x
  3. Step 3: Cross multiply
    120,018.12x = 165,628.34 × 66,306.59
  4. Step 4: Simplify right side
    120,018.12x = 10,982,251,331.02
  5. Step 5: Solve for x
    x = 10,982,251,331.02/120,018.12
  6. Step 6: Final answer
    x = 91,504.95

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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.