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Finding the Fourth Proportional to 164,808.86, 247,220.48 and 80,639.90

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Solution

The fourth proportional to 164,808.86, 247,220.48 and 80,639.90 is: 120,963.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,808.86 : 247,220.48 = 80,639.90 : x
  2. Step 2: Convert to fraction form
    164,808.86/247,220.48 = 80,639.90/x
  3. Step 3: Cross multiply
    164,808.86x = 247,220.48 × 80,639.90
  4. Step 4: Simplify right side
    164,808.86x = 19,935,833,549.05
  5. Step 5: Solve for x
    x = 19,935,833,549.05/164,808.86
  6. Step 6: Final answer
    x = 120,963.36

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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.