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Finding the Fourth Proportional to 148,671.48, 205,116.39 and 84,963.90

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Solution

The fourth proportional to 148,671.48, 205,116.39 and 84,963.90 is: 117,221.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,671.48 : 205,116.39 = 84,963.90 : x
  2. Step 2: Convert to fraction form
    148,671.48/205,116.39 = 84,963.90/x
  3. Step 3: Cross multiply
    148,671.48x = 205,116.39 × 84,963.90
  4. Step 4: Simplify right side
    148,671.48x = 17,427,488,448.32
  5. Step 5: Solve for x
    x = 17,427,488,448.32/148,671.48
  6. Step 6: Final answer
    x = 117,221.46

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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.