Home / 120,621,353.70-180,932,030.55-100,532,883.90

Finding the Fourth Proportional to 120,621,353.70, 180,932,030.55 and 100,532,883.90

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Solution

The fourth proportional to 120,621,353.70, 180,932,030.55 and 100,532,883.90 is: 150,799,325.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,621,353.70 : 180,932,030.55 = 100,532,883.90 : x
  2. Step 2: Convert to fraction form
    120,621,353.70/180,932,030.55 = 100,532,883.90/x
  3. Step 3: Cross multiply
    120,621,353.70x = 180,932,030.55 × 100,532,883.90
  4. Step 4: Simplify right side
    120,621,353.70x = 18,189,618,821,074,404
  5. Step 5: Solve for x
    x = 18,189,618,821,074,404/120,621,353.70
  6. Step 6: Final answer
    x = 150,799,325.85

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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.