Home / 123,102.81-169,881.83-66,514.19

Finding the Fourth Proportional to 123,102.81, 169,881.83 and 66,514.19

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Solution

The fourth proportional to 123,102.81, 169,881.83 and 66,514.19 is: 91,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,102.81 : 169,881.83 = 66,514.19 : x
  2. Step 2: Convert to fraction form
    123,102.81/169,881.83 = 66,514.19/x
  3. Step 3: Cross multiply
    123,102.81x = 169,881.83 × 66,514.19
  4. Step 4: Simplify right side
    123,102.81x = 11,299,552,050.48
  5. Step 5: Solve for x
    x = 11,299,552,050.48/123,102.81
  6. Step 6: Final answer
    x = 91,789.55

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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.