Home / 103,712.64-155,561.44-40,520.88

Finding the Fourth Proportional to 103,712.64, 155,561.44 and 40,520.88

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Solution

The fourth proportional to 103,712.64, 155,561.44 and 40,520.88 is: 60,778.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,712.64 : 155,561.44 = 40,520.88 : x
  2. Step 2: Convert to fraction form
    103,712.64/155,561.44 = 40,520.88/x
  3. Step 3: Cross multiply
    103,712.64x = 155,561.44 × 40,520.88
  4. Step 4: Simplify right side
    103,712.64x = 6,303,486,442.87
  5. Step 5: Solve for x
    x = 6,303,486,442.87/103,712.64
  6. Step 6: Final answer
    x = 60,778.38

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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.