Home / 103,512.34-155,157.78-53,542.14

Finding the Fourth Proportional to 103,512.34, 155,157.78 and 53,542.14

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Solution

The fourth proportional to 103,512.34, 155,157.78 and 53,542.14 is: 80,255.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,512.34 : 155,157.78 = 53,542.14 : x
  2. Step 2: Convert to fraction form
    103,512.34/155,157.78 = 53,542.14/x
  3. Step 3: Cross multiply
    103,512.34x = 155,157.78 × 53,542.14
  4. Step 4: Simplify right side
    103,512.34x = 8,307,479,578.85
  5. Step 5: Solve for x
    x = 8,307,479,578.85/103,512.34
  6. Step 6: Final answer
    x = 80,255.93

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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.