Home / 103,694.28-155,308.02-72,668.04

Finding the Fourth Proportional to 103,694.28, 155,308.02 and 72,668.04

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Solution

The fourth proportional to 103,694.28, 155,308.02 and 72,668.04 is: 108,838.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,694.28 : 155,308.02 = 72,668.04 : x
  2. Step 2: Convert to fraction form
    103,694.28/155,308.02 = 72,668.04/x
  3. Step 3: Cross multiply
    103,694.28x = 155,308.02 × 72,668.04
  4. Step 4: Simplify right side
    103,694.28x = 11,285,929,409.68
  5. Step 5: Solve for x
    x = 11,285,929,409.68/103,694.28
  6. Step 6: Final answer
    x = 108,838.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.