Home / 216,564.47-324,902.07-90,162.70

Finding the Fourth Proportional to 216,564.47, 324,902.07 and 90,162.70

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Solution

The fourth proportional to 216,564.47, 324,902.07 and 90,162.70 is: 135,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,564.47 : 324,902.07 = 90,162.70 : x
  2. Step 2: Convert to fraction form
    216,564.47/324,902.07 = 90,162.70/x
  3. Step 3: Cross multiply
    216,564.47x = 324,902.07 × 90,162.70
  4. Step 4: Simplify right side
    216,564.47x = 29,294,048,006.58
  5. Step 5: Solve for x
    x = 29,294,048,006.58/216,564.47
  6. Step 6: Final answer
    x = 135,267.10

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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.