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Finding the Fourth Proportional to 121,745.22, 168,008.04 and 68,030.29

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Solution

The fourth proportional to 121,745.22, 168,008.04 and 68,030.29 is: 93,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,745.22 : 168,008.04 = 68,030.29 : x
  2. Step 2: Convert to fraction form
    121,745.22/168,008.04 = 68,030.29/x
  3. Step 3: Cross multiply
    121,745.22x = 168,008.04 × 68,030.29
  4. Step 4: Simplify right side
    121,745.22x = 11,429,635,683.53
  5. Step 5: Solve for x
    x = 11,429,635,683.53/121,745.22
  6. Step 6: Final answer
    x = 93,881.60

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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.