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Finding the Fourth Proportional to 99,136.53, 148,748.81 and 40,087.53

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Solution

The fourth proportional to 99,136.53, 148,748.81 and 40,087.53 is: 60,149.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,136.53 : 148,748.81 = 40,087.53 : x
  2. Step 2: Convert to fraction form
    99,136.53/148,748.81 = 40,087.53/x
  3. Step 3: Cross multiply
    99,136.53x = 148,748.81 × 40,087.53
  4. Step 4: Simplify right side
    99,136.53x = 5,962,972,182.90
  5. Step 5: Solve for x
    x = 5,962,972,182.90/99,136.53
  6. Step 6: Final answer
    x = 60,149.09

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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.