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Finding the Fourth Proportional to 103,620.60, 155,512.91 and 40,470.98

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Solution

The fourth proportional to 103,620.60, 155,512.91 and 40,470.98 is: 60,738.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.60 : 155,512.91 = 40,470.98 : x
  2. Step 2: Convert to fraction form
    103,620.60/155,512.91 = 40,470.98/x
  3. Step 3: Cross multiply
    103,620.60x = 155,512.91 × 40,470.98
  4. Step 4: Simplify right side
    103,620.60x = 6,293,759,193.96
  5. Step 5: Solve for x
    x = 6,293,759,193.96/103,620.60
  6. Step 6: Final answer
    x = 60,738.49

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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.