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Finding the Fourth Proportional to 148,688.93, 205,190.93 and 80,705.92

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Solution

The fourth proportional to 148,688.93, 205,190.93 and 80,705.92 is: 111,374.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,688.93 : 205,190.93 = 80,705.92 : x
  2. Step 2: Convert to fraction form
    148,688.93/205,190.93 = 80,705.92/x
  3. Step 3: Cross multiply
    148,688.93x = 205,190.93 × 80,705.92
  4. Step 4: Simplify right side
    148,688.93x = 16,560,121,864.80
  5. Step 5: Solve for x
    x = 16,560,121,864.80/148,688.93
  6. Step 6: Final answer
    x = 111,374.28

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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.