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Finding the Fourth Proportional to 98,998.80, 148,498.20 and 27,921.30

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Solution

The fourth proportional to 98,998.80, 148,498.20 and 27,921.30 is: 41,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,998.80 : 148,498.20 = 27,921.30 : x
  2. Step 2: Convert to fraction form
    98,998.80/148,498.20 = 27,921.30/x
  3. Step 3: Cross multiply
    98,998.80x = 148,498.20 × 27,921.30
  4. Step 4: Simplify right side
    98,998.80x = 4,146,262,791.66
  5. Step 5: Solve for x
    x = 4,146,262,791.66/98,998.80
  6. Step 6: Final answer
    x = 41,881.95

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1.5x scale

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.