Home / 123,108.15-169,888.98-66,519.53

Finding the Fourth Proportional to 123,108.15, 169,888.98 and 66,519.53

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Solution

The fourth proportional to 123,108.15, 169,888.98 and 66,519.53 is: 91,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,108.15 : 169,888.98 = 66,519.53 : x
  2. Step 2: Convert to fraction form
    123,108.15/169,888.98 = 66,519.53/x
  3. Step 3: Cross multiply
    123,108.15x = 169,888.98 × 66,519.53
  4. Step 4: Simplify right side
    123,108.15x = 11,300,933,919.74
  5. Step 5: Solve for x
    x = 11,300,933,919.74/123,108.15
  6. Step 6: Final answer
    x = 91,796.80

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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.