Home / 123,320.50-170,182.49-66,731.87

Finding the Fourth Proportional to 123,320.50, 170,182.49 and 66,731.87

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Solution

The fourth proportional to 123,320.50, 170,182.49 and 66,731.87 is: 92,090.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,320.50 : 170,182.49 = 66,731.87 : x
  2. Step 2: Convert to fraction form
    123,320.50/170,182.49 = 66,731.87/x
  3. Step 3: Cross multiply
    123,320.50x = 170,182.49 × 66,731.87
  4. Step 4: Simplify right side
    123,320.50x = 11,356,595,890.75
  5. Step 5: Solve for x
    x = 11,356,595,890.75/123,320.50
  6. Step 6: Final answer
    x = 92,090.09

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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.