Home / 124,236.09-171,402.08-81,240.73

Finding the Fourth Proportional to 124,236.09, 171,402.08 and 81,240.73

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Solution

The fourth proportional to 124,236.09, 171,402.08 and 81,240.73 is: 112,083.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,236.09 : 171,402.08 = 81,240.73 : x
  2. Step 2: Convert to fraction form
    124,236.09/171,402.08 = 81,240.73/x
  3. Step 3: Cross multiply
    124,236.09x = 171,402.08 × 81,240.73
  4. Step 4: Simplify right side
    124,236.09x = 13,924,829,268.01
  5. Step 5: Solve for x
    x = 13,924,829,268.01/124,236.09
  6. Step 6: Final answer
    x = 112,083.61

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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.