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Finding the Fourth Proportional to 179,978.58, 248,363.70 and 99,404.36

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Solution

The fourth proportional to 179,978.58, 248,363.70 and 99,404.36 is: 137,174.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,978.58 : 248,363.70 = 99,404.36 : x
  2. Step 2: Convert to fraction form
    179,978.58/248,363.70 = 99,404.36/x
  3. Step 3: Cross multiply
    179,978.58x = 248,363.70 × 99,404.36
  4. Step 4: Simplify right side
    179,978.58x = 24,688,434,645.73
  5. Step 5: Solve for x
    x = 24,688,434,645.73/179,978.58
  6. Step 6: Final answer
    x = 137,174.29

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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.