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Finding the Fourth Proportional to 99,173.58, 136,855.79 and 53,850.58

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Solution

The fourth proportional to 99,173.58, 136,855.79 and 53,850.58 is: 74,311.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,173.58 : 136,855.79 = 53,850.58 : x
  2. Step 2: Convert to fraction form
    99,173.58/136,855.79 = 53,850.58/x
  3. Step 3: Cross multiply
    99,173.58x = 136,855.79 × 53,850.58
  4. Step 4: Simplify right side
    99,173.58x = 7,369,763,667.86
  5. Step 5: Solve for x
    x = 7,369,763,667.86/99,173.58
  6. Step 6: Final answer
    x = 74,311.76

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1.5x scale

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.