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Finding the Fourth Proportional to 154,926.99, 231,804.05 and 91,781.01

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Solution

The fourth proportional to 154,926.99, 231,804.05 and 91,781.01 is: 137,324.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,926.99 : 231,804.05 = 91,781.01 : x
  2. Step 2: Convert to fraction form
    154,926.99/231,804.05 = 91,781.01/x
  3. Step 3: Cross multiply
    154,926.99x = 231,804.05 × 91,781.01
  4. Step 4: Simplify right side
    154,926.99x = 21,275,209,372.19
  5. Step 5: Solve for x
    x = 21,275,209,372.19/154,926.99
  6. Step 6: Final answer
    x = 137,324.10

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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.