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Finding the Fourth Proportional to 231,599.80, 319,686.54 and 136,134.82

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Solution

The fourth proportional to 231,599.80, 319,686.54 and 136,134.82 is: 187,912.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,599.80 : 319,686.54 = 136,134.82 : x
  2. Step 2: Convert to fraction form
    231,599.80/319,686.54 = 136,134.82/x
  3. Step 3: Cross multiply
    231,599.80x = 319,686.54 × 136,134.82
  4. Step 4: Simplify right side
    231,599.80x = 43,520,469,579.32
  5. Step 5: Solve for x
    x = 43,520,469,579.32/231,599.80
  6. Step 6: Final answer
    x = 187,912.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.