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Finding the Fourth Proportional to 169,802.90, 254,704.35 and 81,229.40

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Solution

The fourth proportional to 169,802.90, 254,704.35 and 81,229.40 is: 121,844.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,802.90 : 254,704.35 = 81,229.40 : x
  2. Step 2: Convert to fraction form
    169,802.90/254,704.35 = 81,229.40/x
  3. Step 3: Cross multiply
    169,802.90x = 254,704.35 × 81,229.40
  4. Step 4: Simplify right side
    169,802.90x = 20,689,481,527.89
  5. Step 5: Solve for x
    x = 20,689,481,527.89/169,802.90
  6. Step 6: Final answer
    x = 121,844.10

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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.