Home / 103,515.91-155,334.15-43,540.07

Finding the Fourth Proportional to 103,515.91, 155,334.15 and 43,540.07

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Solution

The fourth proportional to 103,515.91, 155,334.15 and 43,540.07 is: 65,335.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,515.91 : 155,334.15 = 43,540.07 : x
  2. Step 2: Convert to fraction form
    103,515.91/155,334.15 = 43,540.07/x
  3. Step 3: Cross multiply
    103,515.91x = 155,334.15 × 43,540.07
  4. Step 4: Simplify right side
    103,515.91x = 6,763,258,987.72
  5. Step 5: Solve for x
    x = 6,763,258,987.72/103,515.91
  6. Step 6: Final answer
    x = 65,335.46

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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.