Home / 123,072.85-169,840.62-66,484.21

Finding the Fourth Proportional to 123,072.85, 169,840.62 and 66,484.21

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Solution

The fourth proportional to 123,072.85, 169,840.62 and 66,484.21 is: 91,748.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,072.85 : 169,840.62 = 66,484.21 : x
  2. Step 2: Convert to fraction form
    123,072.85/169,840.62 = 66,484.21/x
  3. Step 3: Cross multiply
    123,072.85x = 169,840.62 × 66,484.21
  4. Step 4: Simplify right side
    123,072.85x = 11,291,719,446.61
  5. Step 5: Solve for x
    x = 11,291,719,446.61/123,072.85
  6. Step 6: Final answer
    x = 91,748.26

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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.