Home / 120,621,323.70-180,931,985.55-100,532,853.90

Finding the Fourth Proportional to 120,621,323.70, 180,931,985.55 and 100,532,853.90

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Solution

The fourth proportional to 120,621,323.70, 180,931,985.55 and 100,532,853.90 is: 150,799,280.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,621,323.70 : 180,931,985.55 = 100,532,853.90 : x
  2. Step 2: Convert to fraction form
    120,621,323.70/180,931,985.55 = 100,532,853.90/x
  3. Step 3: Cross multiply
    120,621,323.70x = 180,931,985.55 × 100,532,853.90
  4. Step 4: Simplify right side
    120,621,323.70x = 18,189,608,869,135,064
  5. Step 5: Solve for x
    x = 18,189,608,869,135,064/120,621,323.70
  6. Step 6: Final answer
    x = 150,799,280.85

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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.