Home / 101,687.28-140,315.10-58,668.36

Finding the Fourth Proportional to 101,687.28, 140,315.10 and 58,668.36

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Solution

The fourth proportional to 101,687.28, 140,315.10 and 58,668.36 is: 80,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,687.28 : 140,315.10 = 58,668.36 : x
  2. Step 2: Convert to fraction form
    101,687.28/140,315.10 = 58,668.36/x
  3. Step 3: Cross multiply
    101,687.28x = 140,315.10 × 58,668.36
  4. Step 4: Simplify right side
    101,687.28x = 8,232,056,800.24
  5. Step 5: Solve for x
    x = 8,232,056,800.24/101,687.28
  6. Step 6: Final answer
    x = 80,954.64

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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.