Home / 280,140,794.20-420,274,176.90-86,061,165.40

Finding the Fourth Proportional to 280,140,794.20, 420,274,176.90 and 86,061,165.40

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Solution

The fourth proportional to 280,140,794.20, 420,274,176.90 and 86,061,165.40 is: 129,111,097.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,140,794.20 : 420,274,176.90 = 86,061,165.40 : x
  2. Step 2: Convert to fraction form
    280,140,794.20/420,274,176.90 = 86,061,165.40/x
  3. Step 3: Cross multiply
    280,140,794.20x = 420,274,176.90 × 86,061,165.40
  4. Step 4: Simplify right side
    280,140,794.20x = 36,169,285,451,539,760
  5. Step 5: Solve for x
    x = 36,169,285,451,539,760/280,140,794.20
  6. Step 6: Final answer
    x = 129,111,097.71

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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.