Home / 129,029,765.20-193,540,500.60-42,772,152.40

Finding the Fourth Proportional to 129,029,765.20, 193,540,500.60 and 42,772,152.40

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Solution

The fourth proportional to 129,029,765.20, 193,540,500.60 and 42,772,152.40 is: 64,156,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,029,765.20 : 193,540,500.60 = 42,772,152.40 : x
  2. Step 2: Convert to fraction form
    129,029,765.20/193,540,500.60 = 42,772,152.40/x
  3. Step 3: Cross multiply
    129,029,765.20x = 193,540,500.60 × 42,772,152.40
  4. Step 4: Simplify right side
    129,029,765.20x = 8,278,143,787,235,491
  5. Step 5: Solve for x
    x = 8,278,143,787,235,491/129,029,765.20
  6. Step 6: Final answer
    x = 64,156,853.84

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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.