Home / 143,871.01-198,537.64-79,340.21

Finding the Fourth Proportional to 143,871.01, 198,537.64 and 79,340.21

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Solution

The fourth proportional to 143,871.01, 198,537.64 and 79,340.21 is: 109,487.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,871.01 : 198,537.64 = 79,340.21 : x
  2. Step 2: Convert to fraction form
    143,871.01/198,537.64 = 79,340.21/x
  3. Step 3: Cross multiply
    143,871.01x = 198,537.64 × 79,340.21
  4. Step 4: Simplify right side
    143,871.01x = 15,752,018,050.50
  5. Step 5: Solve for x
    x = 15,752,018,050.50/143,871.01
  6. Step 6: Final answer
    x = 109,487.09

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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.