Home / 123,255.10-170,092.03-66,666.48

Finding the Fourth Proportional to 123,255.10, 170,092.03 and 66,666.48

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Solution

The fourth proportional to 123,255.10, 170,092.03 and 66,666.48 is: 91,999.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,255.10 : 170,092.03 = 66,666.48 : x
  2. Step 2: Convert to fraction form
    123,255.10/170,092.03 = 66,666.48/x
  3. Step 3: Cross multiply
    123,255.10x = 170,092.03 × 66,666.48
  4. Step 4: Simplify right side
    123,255.10x = 11,339,436,916.15
  5. Step 5: Solve for x
    x = 11,339,436,916.15/123,255.10
  6. Step 6: Final answer
    x = 91,999.74

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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.