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Finding the Fourth Proportional to 138,569.00, 191,225.14 and 74,906.91

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Solution

The fourth proportional to 138,569.00, 191,225.14 and 74,906.91 is: 103,371.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,569.00 : 191,225.14 = 74,906.91 : x
  2. Step 2: Convert to fraction form
    138,569.00/191,225.14 = 74,906.91/x
  3. Step 3: Cross multiply
    138,569.00x = 191,225.14 × 74,906.91
  4. Step 4: Simplify right side
    138,569.00x = 14,324,084,164.45
  5. Step 5: Solve for x
    x = 14,324,084,164.45/138,569.00
  6. Step 6: Final answer
    x = 103,371.49

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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.