Home / 123,504.18-170,435.52-66,915.78

Finding the Fourth Proportional to 123,504.18, 170,435.52 and 66,915.78

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Solution

The fourth proportional to 123,504.18, 170,435.52 and 66,915.78 is: 92,343.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,504.18 : 170,435.52 = 66,915.78 : x
  2. Step 2: Convert to fraction form
    123,504.18/170,435.52 = 66,915.78/x
  3. Step 3: Cross multiply
    123,504.18x = 170,435.52 × 66,915.78
  4. Step 4: Simplify right side
    123,504.18x = 11,404,825,760.51
  5. Step 5: Solve for x
    x = 11,404,825,760.51/123,504.18
  6. Step 6: Final answer
    x = 92,343.64

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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.