Home / 103,703.28-155,321.52-72,677.04

Finding the Fourth Proportional to 103,703.28, 155,321.52 and 72,677.04

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Solution

The fourth proportional to 103,703.28, 155,321.52 and 72,677.04 is: 108,851.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,703.28 : 155,321.52 = 72,677.04 : x
  2. Step 2: Convert to fraction form
    103,703.28/155,321.52 = 72,677.04/x
  3. Step 3: Cross multiply
    103,703.28x = 155,321.52 × 72,677.04
  4. Step 4: Simplify right side
    103,703.28x = 11,288,308,321.90
  5. Step 5: Solve for x
    x = 11,288,308,321.90/103,703.28
  6. Step 6: Final answer
    x = 108,851.99

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1.5x scale

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.