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Finding the Fourth Proportional to 136,703.07, 188,743.52 and 88,422.03

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Solution

The fourth proportional to 136,703.07, 188,743.52 and 88,422.03 is: 122,082.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,703.07 : 188,743.52 = 88,422.03 : x
  2. Step 2: Convert to fraction form
    136,703.07/188,743.52 = 88,422.03/x
  3. Step 3: Cross multiply
    136,703.07x = 188,743.52 × 88,422.03
  4. Step 4: Simplify right side
    136,703.07x = 16,689,085,187.75
  5. Step 5: Solve for x
    x = 16,689,085,187.75/136,703.07
  6. Step 6: Final answer
    x = 122,082.74

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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.