Home / 80,919,079.80-121,378,619.70-80,352,209.40

Finding the Fourth Proportional to 80,919,079.80, 121,378,619.70 and 80,352,209.40

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Solution

The fourth proportional to 80,919,079.80, 121,378,619.70 and 80,352,209.40 is: 120,528,314.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,079.80 : 121,378,619.70 = 80,352,209.40 : x
  2. Step 2: Convert to fraction form
    80,919,079.80/121,378,619.70 = 80,352,209.40/x
  3. Step 3: Cross multiply
    80,919,079.80x = 121,378,619.70 × 80,352,209.40
  4. Step 4: Simplify right side
    80,919,079.80x = 9,753,040,266,817,366
  5. Step 5: Solve for x
    x = 9,753,040,266,817,366/80,919,079.80
  6. Step 6: Final answer
    x = 120,528,314.10

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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.