Home / 103,625.35-155,438.03-91,378.15

Finding the Fourth Proportional to 103,625.35, 155,438.03 and 91,378.15

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Solution

The fourth proportional to 103,625.35, 155,438.03 and 91,378.15 is: 137,067.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,625.35 : 155,438.03 = 91,378.15 : x
  2. Step 2: Convert to fraction form
    103,625.35/155,438.03 = 91,378.15/x
  3. Step 3: Cross multiply
    103,625.35x = 155,438.03 × 91,378.15
  4. Step 4: Simplify right side
    103,625.35x = 14,203,639,621.04
  5. Step 5: Solve for x
    x = 14,203,639,621.04/103,625.35
  6. Step 6: Final answer
    x = 137,067.23

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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.