Home / 121,886.61-168,202.55-68,171.59

Finding the Fourth Proportional to 121,886.61, 168,202.55 and 68,171.59

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Solution

The fourth proportional to 121,886.61, 168,202.55 and 68,171.59 is: 94,076.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,886.61 : 168,202.55 = 68,171.59 : x
  2. Step 2: Convert to fraction form
    121,886.61/168,202.55 = 68,171.59/x
  3. Step 3: Cross multiply
    121,886.61x = 168,202.55 × 68,171.59
  4. Step 4: Simplify right side
    121,886.61x = 11,466,635,275.55
  5. Step 5: Solve for x
    x = 11,466,635,275.55/121,886.61
  6. Step 6: Final answer
    x = 94,076.25

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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.