Home / 122,140.46-168,551.79-68,425.31

Finding the Fourth Proportional to 122,140.46, 168,551.79 and 68,425.31

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Solution

The fourth proportional to 122,140.46, 168,551.79 and 68,425.31 is: 94,425.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,140.46 : 168,551.79 = 68,425.31 : x
  2. Step 2: Convert to fraction form
    122,140.46/168,551.79 = 68,425.31/x
  3. Step 3: Cross multiply
    122,140.46x = 168,551.79 × 68,425.31
  4. Step 4: Simplify right side
    122,140.46x = 11,533,207,698.49
  5. Step 5: Solve for x
    x = 11,533,207,698.49/122,140.46
  6. Step 6: Final answer
    x = 94,425.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.