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Finding the Fourth Proportional to 100,150.50, 150,235.78 and 36,987.20

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Solution

The fourth proportional to 100,150.50, 150,235.78 and 36,987.20 is: 55,484.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,150.50 : 150,235.78 = 36,987.20 : x
  2. Step 2: Convert to fraction form
    100,150.50/150,235.78 = 36,987.20/x
  3. Step 3: Cross multiply
    100,150.50x = 150,235.78 × 36,987.20
  4. Step 4: Simplify right side
    100,150.50x = 5,556,800,842.02
  5. Step 5: Solve for x
    x = 5,556,800,842.02/100,150.50
  6. Step 6: Final answer
    x = 55,484.50

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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.