Home / 123,239.48-170,071.26-66,650.72

Finding the Fourth Proportional to 123,239.48, 170,071.26 and 66,650.72

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Solution

The fourth proportional to 123,239.48, 170,071.26 and 66,650.72 is: 91,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,239.48 : 170,071.26 = 66,650.72 : x
  2. Step 2: Convert to fraction form
    123,239.48/170,071.26 = 66,650.72/x
  3. Step 3: Cross multiply
    123,239.48x = 170,071.26 × 66,650.72
  4. Step 4: Simplify right side
    123,239.48x = 11,335,371,930.31
  5. Step 5: Solve for x
    x = 11,335,371,930.31/123,239.48
  6. Step 6: Final answer
    x = 91,978.41

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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.