Home / 109,872.24-151,468.36-78,029.52

Finding the Fourth Proportional to 109,872.24, 151,468.36 and 78,029.52

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Solution

The fourth proportional to 109,872.24, 151,468.36 and 78,029.52 is: 107,570.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,872.24 : 151,468.36 = 78,029.52 : x
  2. Step 2: Convert to fraction form
    109,872.24/151,468.36 = 78,029.52/x
  3. Step 3: Cross multiply
    109,872.24x = 151,468.36 × 78,029.52
  4. Step 4: Simplify right side
    109,872.24x = 11,819,003,425.99
  5. Step 5: Solve for x
    x = 11,819,003,425.99/109,872.24
  6. Step 6: Final answer
    x = 107,570.42

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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.