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Finding the Fourth Proportional to 179,136, 247,208.64 and 99,648

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Solution

The fourth proportional to 179,136, 247,208.64 and 99,648 is: 137,514.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,136 : 247,208.64 = 99,648 : x
  2. Step 2: Convert to fraction form
    179,136/247,208.64 = 99,648/x
  3. Step 3: Cross multiply
    179,136x = 247,208.64 × 99,648
  4. Step 4: Simplify right side
    179,136x = 24,633,846,558.72
  5. Step 5: Solve for x
    x = 24,633,846,558.72/179,136
  6. Step 6: Final answer
    x = 137,514.77

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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.