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Finding the Fourth Proportional to 154,887.36, 231,744.12 and 91,741.36

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Solution

The fourth proportional to 154,887.36, 231,744.12 and 91,741.36 is: 137,264.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,887.36 : 231,744.12 = 91,741.36 : x
  2. Step 2: Convert to fraction form
    154,887.36/231,744.12 = 91,741.36/x
  3. Step 3: Cross multiply
    154,887.36x = 231,744.12 × 91,741.36
  4. Step 4: Simplify right side
    154,887.36x = 21,260,520,740.80
  5. Step 5: Solve for x
    x = 21,260,520,740.80/154,887.36
  6. Step 6: Final answer
    x = 137,264.40

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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.