Home / 99,421.15-149,136.33-28,348.60

Finding the Fourth Proportional to 99,421.15, 149,136.33 and 28,348.60

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Solution

The fourth proportional to 99,421.15, 149,136.33 and 28,348.60 is: 42,524.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,421.15 : 149,136.33 = 28,348.60 : x
  2. Step 2: Convert to fraction form
    99,421.15/149,136.33 = 28,348.60/x
  3. Step 3: Cross multiply
    99,421.15x = 149,136.33 × 28,348.60
  4. Step 4: Simplify right side
    99,421.15x = 4,227,806,164.64
  5. Step 5: Solve for x
    x = 4,227,806,164.64/99,421.15
  6. Step 6: Final answer
    x = 42,524.21

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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.