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Finding the Fourth Proportional to 122,290.43, 168,683.09 and 88,348.77

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Solution

The fourth proportional to 122,290.43, 168,683.09 and 88,348.77 is: 121,865.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,290.43 : 168,683.09 = 88,348.77 : x
  2. Step 2: Convert to fraction form
    122,290.43/168,683.09 = 88,348.77/x
  3. Step 3: Cross multiply
    122,290.43x = 168,683.09 × 88,348.77
  4. Step 4: Simplify right side
    122,290.43x = 14,902,943,079.56
  5. Step 5: Solve for x
    x = 14,902,943,079.56/122,290.43
  6. Step 6: Final answer
    x = 121,865.17

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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.