Home / 123,102.23-169,881.03-66,513.60

Finding the Fourth Proportional to 123,102.23, 169,881.03 and 66,513.60

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Solution

The fourth proportional to 123,102.23, 169,881.03 and 66,513.60 is: 91,788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,102.23 : 169,881.03 = 66,513.60 : x
  2. Step 2: Convert to fraction form
    123,102.23/169,881.03 = 66,513.60/x
  3. Step 3: Cross multiply
    123,102.23x = 169,881.03 × 66,513.60
  4. Step 4: Simplify right side
    123,102.23x = 11,299,398,877.01
  5. Step 5: Solve for x
    x = 11,299,398,877.01/123,102.23
  6. Step 6: Final answer
    x = 91,788.75

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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.