Home / 123,168.67-169,972.91-66,580

Finding the Fourth Proportional to 123,168.67, 169,972.91 and 66,580

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Solution

The fourth proportional to 123,168.67, 169,972.91 and 66,580 is: 91,880.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,168.67 : 169,972.91 = 66,580 : x
  2. Step 2: Convert to fraction form
    123,168.67/169,972.91 = 66,580/x
  3. Step 3: Cross multiply
    123,168.67x = 169,972.91 × 66,580
  4. Step 4: Simplify right side
    123,168.67x = 11,316,796,347.80
  5. Step 5: Solve for x
    x = 11,316,796,347.80/123,168.67
  6. Step 6: Final answer
    x = 91,880.48

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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.