Home / 133,311.39-199,967.28-53,385.35

Finding the Fourth Proportional to 133,311.39, 199,967.28 and 53,385.35

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Solution

The fourth proportional to 133,311.39, 199,967.28 and 53,385.35 is: 80,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,311.39 : 199,967.28 = 53,385.35 : x
  2. Step 2: Convert to fraction form
    133,311.39/199,967.28 = 53,385.35/x
  3. Step 3: Cross multiply
    133,311.39x = 199,967.28 × 53,385.35
  4. Step 4: Simplify right side
    133,311.39x = 10,675,322,231.51
  5. Step 5: Solve for x
    x = 10,675,322,231.51/133,311.39
  6. Step 6: Final answer
    x = 80,078.10

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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.