Home / 199,787.24-299,679.78-81,458.12

Finding the Fourth Proportional to 199,787.24, 299,679.78 and 81,458.12

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Solution

The fourth proportional to 199,787.24, 299,679.78 and 81,458.12 is: 122,186.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,787.24 : 299,679.78 = 81,458.12 : x
  2. Step 2: Convert to fraction form
    199,787.24/299,679.78 = 81,458.12/x
  3. Step 3: Cross multiply
    199,787.24x = 299,679.78 × 81,458.12
  4. Step 4: Simplify right side
    199,787.24x = 24,411,351,480.81
  5. Step 5: Solve for x
    x = 24,411,351,480.81/199,787.24
  6. Step 6: Final answer
    x = 122,186.74

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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.