Home / 121,766.76-167,837.40-81,466.02

Finding the Fourth Proportional to 121,766.76, 167,837.40 and 81,466.02

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Solution

The fourth proportional to 121,766.76, 167,837.40 and 81,466.02 is: 112,288.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,766.76 : 167,837.40 = 81,466.02 : x
  2. Step 2: Convert to fraction form
    121,766.76/167,837.40 = 81,466.02/x
  3. Step 3: Cross multiply
    121,766.76x = 167,837.40 × 81,466.02
  4. Step 4: Simplify right side
    121,766.76x = 13,673,044,985.15
  5. Step 5: Solve for x
    x = 13,673,044,985.15/121,766.76
  6. Step 6: Final answer
    x = 112,288.81

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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.