Home / 123,248.90-170,083.49-66,660.28

Finding the Fourth Proportional to 123,248.90, 170,083.49 and 66,660.28

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Solution

The fourth proportional to 123,248.90, 170,083.49 and 66,660.28 is: 91,991.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,248.90 : 170,083.49 = 66,660.28 : x
  2. Step 2: Convert to fraction form
    123,248.90/170,083.49 = 66,660.28/x
  3. Step 3: Cross multiply
    123,248.90x = 170,083.49 × 66,660.28
  4. Step 4: Simplify right side
    123,248.90x = 11,337,813,066.78
  5. Step 5: Solve for x
    x = 11,337,813,066.78/123,248.90
  6. Step 6: Final answer
    x = 91,991.19

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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.