Home / 80,919,514.80-121,379,272.20-80,352,644.40

Finding the Fourth Proportional to 80,919,514.80, 121,379,272.20 and 80,352,644.40

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Solution

The fourth proportional to 80,919,514.80, 121,379,272.20 and 80,352,644.40 is: 120,528,966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,514.80 : 121,379,272.20 = 80,352,644.40 : x
  2. Step 2: Convert to fraction form
    80,919,514.80/121,379,272.20 = 80,352,644.40/x
  3. Step 3: Cross multiply
    80,919,514.80x = 121,379,272.20 × 80,352,644.40
  4. Step 4: Simplify right side
    80,919,514.80x = 9,753,145,496,617,406
  5. Step 5: Solve for x
    x = 9,753,145,496,617,406/80,919,514.80
  6. Step 6: Final answer
    x = 120,528,966.60

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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.