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Finding the Fourth Proportional to 99,545.88, 149,270.22 and 43,433.40

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Solution

The fourth proportional to 99,545.88, 149,270.22 and 43,433.40 is: 65,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,545.88 : 149,270.22 = 43,433.40 : x
  2. Step 2: Convert to fraction form
    99,545.88/149,270.22 = 43,433.40/x
  3. Step 3: Cross multiply
    99,545.88x = 149,270.22 × 43,433.40
  4. Step 4: Simplify right side
    99,545.88x = 6,483,313,173.35
  5. Step 5: Solve for x
    x = 6,483,313,173.35/99,545.88
  6. Step 6: Final answer
    x = 65,128.90

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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.