Home / 221,100.46-331,569.09-78,907.69

Finding the Fourth Proportional to 221,100.46, 331,569.09 and 78,907.69

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Solution

The fourth proportional to 221,100.46, 331,569.09 and 78,907.69 is: 118,332.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,100.46 : 331,569.09 = 78,907.69 : x
  2. Step 2: Convert to fraction form
    221,100.46/331,569.09 = 78,907.69/x
  3. Step 3: Cross multiply
    221,100.46x = 331,569.09 × 78,907.69
  4. Step 4: Simplify right side
    221,100.46x = 26,163,350,967.30
  5. Step 5: Solve for x
    x = 26,163,350,967.30/221,100.46
  6. Step 6: Final answer
    x = 118,332.41

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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.