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Finding the Fourth Proportional to 231,158.88, 346,787.36 and 81,393.12

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Solution

The fourth proportional to 231,158.88, 346,787.36 and 81,393.12 is: 122,106.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,158.88 : 346,787.36 = 81,393.12 : x
  2. Step 2: Convert to fraction form
    231,158.88/346,787.36 = 81,393.12/x
  3. Step 3: Cross multiply
    231,158.88x = 346,787.36 × 81,393.12
  4. Step 4: Simplify right side
    231,158.88x = 28,226,105,206.96
  5. Step 5: Solve for x
    x = 28,226,105,206.96/231,158.88
  6. Step 6: Final answer
    x = 122,106.95

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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.