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Finding the Fourth Proportional to 138,032.72, 206,837.89 and 92,886.89

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Solution

The fourth proportional to 138,032.72, 206,837.89 and 92,886.89 is: 139,188.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,032.72 : 206,837.89 = 92,886.89 : x
  2. Step 2: Convert to fraction form
    138,032.72/206,837.89 = 92,886.89/x
  3. Step 3: Cross multiply
    138,032.72x = 206,837.89 × 92,886.89
  4. Step 4: Simplify right side
    138,032.72x = 19,212,528,336.26
  5. Step 5: Solve for x
    x = 19,212,528,336.26/138,032.72
  6. Step 6: Final answer
    x = 139,188.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.