Home / 111,909.52-154,455.84-64,163.20

Finding the Fourth Proportional to 111,909.52, 154,455.84 and 64,163.20

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Solution

The fourth proportional to 111,909.52, 154,455.84 and 64,163.20 is: 88,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,909.52 : 154,455.84 = 64,163.20 : x
  2. Step 2: Convert to fraction form
    111,909.52/154,455.84 = 64,163.20/x
  3. Step 3: Cross multiply
    111,909.52x = 154,455.84 × 64,163.20
  4. Step 4: Simplify right side
    111,909.52x = 9,910,380,953.09
  5. Step 5: Solve for x
    x = 9,910,380,953.09/111,909.52
  6. Step 6: Final answer
    x = 88,557.09

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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.