Home / 80,919,077.80-121,378,616.70-80,352,207.40

Finding the Fourth Proportional to 80,919,077.80, 121,378,616.70 and 80,352,207.40

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Solution

The fourth proportional to 80,919,077.80, 121,378,616.70 and 80,352,207.40 is: 120,528,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,077.80 : 121,378,616.70 = 80,352,207.40 : x
  2. Step 2: Convert to fraction form
    80,919,077.80/121,378,616.70 = 80,352,207.40/x
  3. Step 3: Cross multiply
    80,919,077.80x = 121,378,616.70 × 80,352,207.40
  4. Step 4: Simplify right side
    80,919,077.80x = 9,753,039,783,003,504
  5. Step 5: Solve for x
    x = 9,753,039,783,003,504/80,919,077.80
  6. Step 6: Final answer
    x = 120,528,311.10

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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.