Home / 123,058.70-169,821-66,470.07

Finding the Fourth Proportional to 123,058.70, 169,821 and 66,470.07

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Solution

The fourth proportional to 123,058.70, 169,821 and 66,470.07 is: 91,728.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,058.70 : 169,821 = 66,470.07 : x
  2. Step 2: Convert to fraction form
    123,058.70/169,821 = 66,470.07/x
  3. Step 3: Cross multiply
    123,058.70x = 169,821 × 66,470.07
  4. Step 4: Simplify right side
    123,058.70x = 11,288,013,757.47
  5. Step 5: Solve for x
    x = 11,288,013,757.47/123,058.70
  6. Step 6: Final answer
    x = 91,728.70

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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.