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Finding the Fourth Proportional to 99,054.90, 148,910.40 and 84,620.70

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Solution

The fourth proportional to 99,054.90, 148,910.40 and 84,620.70 is: 127,211.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,054.90 : 148,910.40 = 84,620.70 : x
  2. Step 2: Convert to fraction form
    99,054.90/148,910.40 = 84,620.70/x
  3. Step 3: Cross multiply
    99,054.90x = 148,910.40 × 84,620.70
  4. Step 4: Simplify right side
    99,054.90x = 12,600,902,285.28
  5. Step 5: Solve for x
    x = 12,600,902,285.28/99,054.90
  6. Step 6: Final answer
    x = 127,211.30

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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.