Home / 99,784.66-149,464.19-80,727.52

Finding the Fourth Proportional to 99,784.66, 149,464.19 and 80,727.52

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Solution

The fourth proportional to 99,784.66, 149,464.19 and 80,727.52 is: 120,919.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,784.66 : 149,464.19 = 80,727.52 : x
  2. Step 2: Convert to fraction form
    99,784.66/149,464.19 = 80,727.52/x
  3. Step 3: Cross multiply
    99,784.66x = 149,464.19 × 80,727.52
  4. Step 4: Simplify right side
    99,784.66x = 12,065,872,983.87
  5. Step 5: Solve for x
    x = 12,065,872,983.87/99,784.66
  6. Step 6: Final answer
    x = 120,919.12

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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.