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Finding the Fourth Proportional to 169,836.78, 254,824.34 and 85,621.22

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Solution

The fourth proportional to 169,836.78, 254,824.34 and 85,621.22 is: 128,466.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,836.78 : 254,824.34 = 85,621.22 : x
  2. Step 2: Convert to fraction form
    169,836.78/254,824.34 = 85,621.22/x
  3. Step 3: Cross multiply
    169,836.78x = 254,824.34 × 85,621.22
  4. Step 4: Simplify right side
    169,836.78x = 21,818,369,174.27
  5. Step 5: Solve for x
    x = 21,818,369,174.27/169,836.78
  6. Step 6: Final answer
    x = 128,466.69

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1.5x scale

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.