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Finding the Fourth Proportional to 154,293, 231,111.36 and 91,044.96

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Solution

The fourth proportional to 154,293, 231,111.36 and 91,044.96 is: 136,373.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,293 : 231,111.36 = 91,044.96 : x
  2. Step 2: Convert to fraction form
    154,293/231,111.36 = 91,044.96/x
  3. Step 3: Cross multiply
    154,293x = 231,111.36 × 91,044.96
  4. Step 4: Simplify right side
    154,293x = 21,041,524,526.75
  5. Step 5: Solve for x
    x = 21,041,524,526.75/154,293
  6. Step 6: Final answer
    x = 136,373.81

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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.