Home / 80,168,081.70-120,252,122.55-68,688,956.10

Finding the Fourth Proportional to 80,168,081.70, 120,252,122.55 and 68,688,956.10

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Solution

The fourth proportional to 80,168,081.70, 120,252,122.55 and 68,688,956.10 is: 103,033,434.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,168,081.70 : 120,252,122.55 = 68,688,956.10 : x
  2. Step 2: Convert to fraction form
    80,168,081.70/120,252,122.55 = 68,688,956.10/x
  3. Step 3: Cross multiply
    80,168,081.70x = 120,252,122.55 × 68,688,956.10
  4. Step 4: Simplify right side
    80,168,081.70x = 8,259,992,766,768,769
  5. Step 5: Solve for x
    x = 8,259,992,766,768,769/80,168,081.70
  6. Step 6: Final answer
    x = 103,033,434.15

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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.