Home / 80,919,101.80-121,378,652.70-80,352,231.40

Finding the Fourth Proportional to 80,919,101.80, 121,378,652.70 and 80,352,231.40

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Solution

The fourth proportional to 80,919,101.80, 121,378,652.70 and 80,352,231.40 is: 120,528,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,101.80 : 121,378,652.70 = 80,352,231.40 : x
  2. Step 2: Convert to fraction form
    80,919,101.80/121,378,652.70 = 80,352,231.40/x
  3. Step 3: Cross multiply
    80,919,101.80x = 121,378,652.70 × 80,352,231.40
  4. Step 4: Simplify right side
    80,919,101.80x = 9,753,045,588,770,636
  5. Step 5: Solve for x
    x = 9,753,045,588,770,636/80,919,101.80
  6. Step 6: Final answer
    x = 120,528,347.10

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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.