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Finding the Fourth Proportional to 99,589.60, 149,165.70 and 69,846.40

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Solution

The fourth proportional to 99,589.60, 149,165.70 and 69,846.40 is: 104,616.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,589.60 : 149,165.70 = 69,846.40 : x
  2. Step 2: Convert to fraction form
    99,589.60/149,165.70 = 69,846.40/x
  3. Step 3: Cross multiply
    99,589.60x = 149,165.70 × 69,846.40
  4. Step 4: Simplify right side
    99,589.60x = 10,418,687,148.48
  5. Step 5: Solve for x
    x = 10,418,687,148.48/99,589.60
  6. Step 6: Final answer
    x = 104,616.22

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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.