Home / 121,966.74-168,305.94-67,515.22

Finding the Fourth Proportional to 121,966.74, 168,305.94 and 67,515.22

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Solution

The fourth proportional to 121,966.74, 168,305.94 and 67,515.22 is: 93,166.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,966.74 : 168,305.94 = 67,515.22 : x
  2. Step 2: Convert to fraction form
    121,966.74/168,305.94 = 67,515.22/x
  3. Step 3: Cross multiply
    121,966.74x = 168,305.94 × 67,515.22
  4. Step 4: Simplify right side
    121,966.74x = 11,363,212,566.41
  5. Step 5: Solve for x
    x = 11,363,212,566.41/121,966.74
  6. Step 6: Final answer
    x = 93,166.49

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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.