Home / 99,572.40-149,112.68-74,211.10

Finding the Fourth Proportional to 99,572.40, 149,112.68 and 74,211.10

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Solution

The fourth proportional to 99,572.40, 149,112.68 and 74,211.10 is: 111,133.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,572.40 : 149,112.68 = 74,211.10 : x
  2. Step 2: Convert to fraction form
    99,572.40/149,112.68 = 74,211.10/x
  3. Step 3: Cross multiply
    99,572.40x = 149,112.68 × 74,211.10
  4. Step 4: Simplify right side
    99,572.40x = 11,065,816,006.75
  5. Step 5: Solve for x
    x = 11,065,816,006.75/99,572.40
  6. Step 6: Final answer
    x = 111,133.37

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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.