Home / 120,742.60-181,113.90-75,836.20

Finding the Fourth Proportional to 120,742.60, 181,113.90 and 75,836.20

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Solution

The fourth proportional to 120,742.60, 181,113.90 and 75,836.20 is: 113,754.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,742.60 : 181,113.90 = 75,836.20 : x
  2. Step 2: Convert to fraction form
    120,742.60/181,113.90 = 75,836.20/x
  3. Step 3: Cross multiply
    120,742.60x = 181,113.90 × 75,836.20
  4. Step 4: Simplify right side
    120,742.60x = 13,734,989,943.18
  5. Step 5: Solve for x
    x = 13,734,989,943.18/120,742.60
  6. Step 6: Final answer
    x = 113,754.30

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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.