Home / 123,490.31-170,416.79-66,901.68

Finding the Fourth Proportional to 123,490.31, 170,416.79 and 66,901.68

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Solution

The fourth proportional to 123,490.31, 170,416.79 and 66,901.68 is: 92,324.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,490.31 : 170,416.79 = 66,901.68 : x
  2. Step 2: Convert to fraction form
    123,490.31/170,416.79 = 66,901.68/x
  3. Step 3: Cross multiply
    123,490.31x = 170,416.79 × 66,901.68
  4. Step 4: Simplify right side
    123,490.31x = 11,401,169,843.90
  5. Step 5: Solve for x
    x = 11,401,169,843.90/123,490.31
  6. Step 6: Final answer
    x = 92,324.41

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1.5x scale

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.