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Finding the Fourth Proportional to 123,496.70, 170,425.35 and 66,908.07

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Solution

The fourth proportional to 123,496.70, 170,425.35 and 66,908.07 is: 92,333.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,496.70 : 170,425.35 = 66,908.07 : x
  2. Step 2: Convert to fraction form
    123,496.70/170,425.35 = 66,908.07/x
  3. Step 3: Cross multiply
    123,496.70x = 170,425.35 × 66,908.07
  4. Step 4: Simplify right side
    123,496.70x = 11,402,831,247.57
  5. Step 5: Solve for x
    x = 11,402,831,247.57/123,496.70
  6. Step 6: Final answer
    x = 92,333.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.