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Finding the Fourth Proportional to 124,693.76, 172,077.38 and 68,105.26

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Solution

The fourth proportional to 124,693.76, 172,077.38 and 68,105.26 is: 93,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,693.76 : 172,077.38 = 68,105.26 : x
  2. Step 2: Convert to fraction form
    124,693.76/172,077.38 = 68,105.26/x
  3. Step 3: Cross multiply
    124,693.76x = 172,077.38 × 68,105.26
  4. Step 4: Simplify right side
    124,693.76x = 11,719,374,705.02
  5. Step 5: Solve for x
    x = 11,719,374,705.02/124,693.76
  6. Step 6: Final answer
    x = 93,985.25

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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.