Home / 123,428.48-170,331.44-66,839.92

Finding the Fourth Proportional to 123,428.48, 170,331.44 and 66,839.92

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Solution

The fourth proportional to 123,428.48, 170,331.44 and 66,839.92 is: 92,239.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,428.48 : 170,331.44 = 66,839.92 : x
  2. Step 2: Convert to fraction form
    123,428.48/170,331.44 = 66,839.92/x
  3. Step 3: Cross multiply
    123,428.48x = 170,331.44 × 66,839.92
  4. Step 4: Simplify right side
    123,428.48x = 11,384,939,823.08
  5. Step 5: Solve for x
    x = 11,384,939,823.08/123,428.48
  6. Step 6: Final answer
    x = 92,239.16

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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.