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Finding the Fourth Proportional to 169,783.80, 254,384.10 and 80,845.80

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Solution

The fourth proportional to 169,783.80, 254,384.10 and 80,845.80 is: 121,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,783.80 : 254,384.10 = 80,845.80 : x
  2. Step 2: Convert to fraction form
    169,783.80/254,384.10 = 80,845.80/x
  3. Step 3: Cross multiply
    169,783.80x = 254,384.10 × 80,845.80
  4. Step 4: Simplify right side
    169,783.80x = 20,565,886,071.78
  5. Step 5: Solve for x
    x = 20,565,886,071.78/169,783.80
  6. Step 6: Final answer
    x = 121,129.85

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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.