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Finding the Fourth Proportional to 98,987.27, 148,480.90 and 28,866.58

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Solution

The fourth proportional to 98,987.27, 148,480.90 and 28,866.58 is: 43,299.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,987.27 : 148,480.90 = 28,866.58 : x
  2. Step 2: Convert to fraction form
    98,987.27/148,480.90 = 28,866.58/x
  3. Step 3: Cross multiply
    98,987.27x = 148,480.90 × 28,866.58
  4. Step 4: Simplify right side
    98,987.27x = 4,286,135,334.95
  5. Step 5: Solve for x
    x = 4,286,135,334.95/98,987.27
  6. Step 6: Final answer
    x = 43,299.87

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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.