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Finding the Fourth Proportional to 143,888.22, 198,566.64 and 83,494.71

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Solution

The fourth proportional to 143,888.22, 198,566.64 and 83,494.71 is: 115,223.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,888.22 : 198,566.64 = 83,494.71 : x
  2. Step 2: Convert to fraction form
    143,888.22/198,566.64 = 83,494.71/x
  3. Step 3: Cross multiply
    143,888.22x = 198,566.64 × 83,494.71
  4. Step 4: Simplify right side
    143,888.22x = 16,579,264,022.47
  5. Step 5: Solve for x
    x = 16,579,264,022.47/143,888.22
  6. Step 6: Final answer
    x = 115,223.22

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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.