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Finding the Fourth Proportional to 123,118.52, 169,798.43 and 84,938.96

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Solution

The fourth proportional to 123,118.52, 169,798.43 and 84,938.96 is: 117,143.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,118.52 : 169,798.43 = 84,938.96 : x
  2. Step 2: Convert to fraction form
    123,118.52/169,798.43 = 84,938.96/x
  3. Step 3: Cross multiply
    123,118.52x = 169,798.43 × 84,938.96
  4. Step 4: Simplify right side
    123,118.52x = 14,422,502,690.68
  5. Step 5: Solve for x
    x = 14,422,502,690.68/123,118.52
  6. Step 6: Final answer
    x = 117,143.25

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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.