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Finding the Fourth Proportional to 143,707.98, 198,301.99 and 88,508.51

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Solution

The fourth proportional to 143,707.98, 198,301.99 and 88,508.51 is: 122,132.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,707.98 : 198,301.99 = 88,508.51 : x
  2. Step 2: Convert to fraction form
    143,707.98/198,301.99 = 88,508.51/x
  3. Step 3: Cross multiply
    143,707.98x = 198,301.99 × 88,508.51
  4. Step 4: Simplify right side
    143,707.98x = 17,551,413,664.93
  5. Step 5: Solve for x
    x = 17,551,413,664.93/143,707.98
  6. Step 6: Final answer
    x = 122,132.49

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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.