Home / 120,087.52-165,729.36-66,371.38

Finding the Fourth Proportional to 120,087.52, 165,729.36 and 66,371.38

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Solution

The fourth proportional to 120,087.52, 165,729.36 and 66,371.38 is: 91,597.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,087.52 : 165,729.36 = 66,371.38 : x
  2. Step 2: Convert to fraction form
    120,087.52/165,729.36 = 66,371.38/x
  3. Step 3: Cross multiply
    120,087.52x = 165,729.36 × 66,371.38
  4. Step 4: Simplify right side
    120,087.52x = 10,999,685,997.86
  5. Step 5: Solve for x
    x = 10,999,685,997.86/120,087.52
  6. Step 6: Final answer
    x = 91,597.25

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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.