Home / 120,998,819.10-181,259,080.20-66,313,540.20

Finding the Fourth Proportional to 120,998,819.10, 181,259,080.20 and 66,313,540.20

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Solution

The fourth proportional to 120,998,819.10, 181,259,080.20 and 66,313,540.20 is: 99,339,244.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,998,819.10 : 181,259,080.20 = 66,313,540.20 : x
  2. Step 2: Convert to fraction form
    120,998,819.10/181,259,080.20 = 66,313,540.20/x
  3. Step 3: Cross multiply
    120,998,819.10x = 181,259,080.20 × 66,313,540.20
  4. Step 4: Simplify right side
    120,998,819.10x = 12,019,931,301,457,724
  5. Step 5: Solve for x
    x = 12,019,931,301,457,724/120,998,819.10
  6. Step 6: Final answer
    x = 99,339,244.72

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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.