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Finding the Fourth Proportional to 100,115.60, 150,091.08 and 46,781.21

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Solution

The fourth proportional to 100,115.60, 150,091.08 and 46,781.21 is: 70,133.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,115.60 : 150,091.08 = 46,781.21 : x
  2. Step 2: Convert to fraction form
    100,115.60/150,091.08 = 46,781.21/x
  3. Step 3: Cross multiply
    100,115.60x = 150,091.08 × 46,781.21
  4. Step 4: Simplify right side
    100,115.60x = 7,021,441,582.15
  5. Step 5: Solve for x
    x = 7,021,441,582.15/100,115.60
  6. Step 6: Final answer
    x = 70,133.35

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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.