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Finding the Fourth Proportional to 148,121.58, 204,402.73 and 84,479.88

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Solution

The fourth proportional to 148,121.58, 204,402.73 and 84,479.88 is: 116,579.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,121.58 : 204,402.73 = 84,479.88 : x
  2. Step 2: Convert to fraction form
    148,121.58/204,402.73 = 84,479.88/x
  3. Step 3: Cross multiply
    148,121.58x = 204,402.73 × 84,479.88
  4. Step 4: Simplify right side
    148,121.58x = 17,267,918,102.07
  5. Step 5: Solve for x
    x = 17,267,918,102.07/148,121.58
  6. Step 6: Final answer
    x = 116,579.35

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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.