Home / 80,519,231.20-120,637,129.20-69,181,823.20

Finding the Fourth Proportional to 80,519,231.20, 120,637,129.20 and 69,181,823.20

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Solution

The fourth proportional to 80,519,231.20, 120,637,129.20 and 69,181,823.20 is: 103,650,971.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,519,231.20 : 120,637,129.20 = 69,181,823.20 : x
  2. Step 2: Convert to fraction form
    80,519,231.20/120,637,129.20 = 69,181,823.20/x
  3. Step 3: Cross multiply
    80,519,231.20x = 120,637,129.20 × 69,181,823.20
  4. Step 4: Simplify right side
    80,519,231.20x = 8,345,896,543,669,958
  5. Step 5: Solve for x
    x = 8,345,896,543,669,958/80,519,231.20
  6. Step 6: Final answer
    x = 103,650,971.57

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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.