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Finding the Fourth Proportional to 169,611.60, 254,446.20 and 90,704.40

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Solution

The fourth proportional to 169,611.60, 254,446.20 and 90,704.40 is: 136,072.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,611.60 : 254,446.20 = 90,704.40 : x
  2. Step 2: Convert to fraction form
    169,611.60/254,446.20 = 90,704.40/x
  3. Step 3: Cross multiply
    169,611.60x = 254,446.20 × 90,704.40
  4. Step 4: Simplify right side
    169,611.60x = 23,079,389,903.28
  5. Step 5: Solve for x
    x = 23,079,389,903.28/169,611.60
  6. Step 6: Final answer
    x = 136,072.00

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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.