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Finding the Fourth Proportional to 99,264, 136,993.08 and 54,560.64

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Solution

The fourth proportional to 99,264, 136,993.08 and 54,560.64 is: 75,298.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,264 : 136,993.08 = 54,560.64 : x
  2. Step 2: Convert to fraction form
    99,264/136,993.08 = 54,560.64/x
  3. Step 3: Cross multiply
    99,264x = 136,993.08 × 54,560.64
  4. Step 4: Simplify right side
    99,264x = 7,474,430,120.37
  5. Step 5: Solve for x
    x = 7,474,430,120.37/99,264
  6. Step 6: Final answer
    x = 75,298.50

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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.