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Finding the Fourth Proportional to 99,545.80, 149,318.70 and 37,208.20

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Solution

The fourth proportional to 99,545.80, 149,318.70 and 37,208.20 is: 55,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,545.80 : 149,318.70 = 37,208.20 : x
  2. Step 2: Convert to fraction form
    99,545.80/149,318.70 = 37,208.20/x
  3. Step 3: Cross multiply
    99,545.80x = 149,318.70 × 37,208.20
  4. Step 4: Simplify right side
    99,545.80x = 5,555,880,053.34
  5. Step 5: Solve for x
    x = 5,555,880,053.34/99,545.80
  6. Step 6: Final answer
    x = 55,812.30

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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.