Home / 120,858.12-181,240.56-45,938.88

Finding the Fourth Proportional to 120,858.12, 181,240.56 and 45,938.88

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Solution

The fourth proportional to 120,858.12, 181,240.56 and 45,938.88 is: 68,890.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,858.12 : 181,240.56 = 45,938.88 : x
  2. Step 2: Convert to fraction form
    120,858.12/181,240.56 = 45,938.88/x
  3. Step 3: Cross multiply
    120,858.12x = 181,240.56 × 45,938.88
  4. Step 4: Simplify right side
    120,858.12x = 8,325,988,336.97
  5. Step 5: Solve for x
    x = 8,325,988,336.97/120,858.12
  6. Step 6: Final answer
    x = 68,890.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.