Home / 120,621,306.20-180,931,959.30-100,532,836.40

Finding the Fourth Proportional to 120,621,306.20, 180,931,959.30 and 100,532,836.40

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Solution

The fourth proportional to 120,621,306.20, 180,931,959.30 and 100,532,836.40 is: 150,799,254.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,621,306.20 : 180,931,959.30 = 100,532,836.40 : x
  2. Step 2: Convert to fraction form
    120,621,306.20/180,931,959.30 = 100,532,836.40/x
  3. Step 3: Cross multiply
    120,621,306.20x = 180,931,959.30 × 100,532,836.40
  4. Step 4: Simplify right side
    120,621,306.20x = 18,189,603,063,838,360
  5. Step 5: Solve for x
    x = 18,189,603,063,838,360/120,621,306.20
  6. Step 6: Final answer
    x = 150,799,254.60

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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.