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Finding the Fourth Proportional to 169,722.60, 254,583.90 and 51,412.20

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Solution

The fourth proportional to 169,722.60, 254,583.90 and 51,412.20 is: 77,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,722.60 : 254,583.90 = 51,412.20 : x
  2. Step 2: Convert to fraction form
    169,722.60/254,583.90 = 51,412.20/x
  3. Step 3: Cross multiply
    169,722.60x = 254,583.90 × 51,412.20
  4. Step 4: Simplify right side
    169,722.60x = 13,088,718,383.58
  5. Step 5: Solve for x
    x = 13,088,718,383.58/169,722.60
  6. Step 6: Final answer
    x = 77,118.30

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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.