Home / 99,559.20-149,241.60-89,061.60

Finding the Fourth Proportional to 99,559.20, 149,241.60 and 89,061.60

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Solution

The fourth proportional to 99,559.20, 149,241.60 and 89,061.60 is: 133,505.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,559.20 : 149,241.60 = 89,061.60 : x
  2. Step 2: Convert to fraction form
    99,559.20/149,241.60 = 89,061.60/x
  3. Step 3: Cross multiply
    99,559.20x = 149,241.60 × 89,061.60
  4. Step 4: Simplify right side
    99,559.20x = 13,291,695,682.56
  5. Step 5: Solve for x
    x = 13,291,695,682.56/99,559.20
  6. Step 6: Final answer
    x = 133,505.45

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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.