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Finding the Fourth Proportional to 123,603.28, 170,571.12 and 69,888.88

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Solution

The fourth proportional to 123,603.28, 170,571.12 and 69,888.88 is: 96,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,603.28 : 170,571.12 = 69,888.88 : x
  2. Step 2: Convert to fraction form
    123,603.28/170,571.12 = 69,888.88/x
  3. Step 3: Cross multiply
    123,603.28x = 170,571.12 × 69,888.88
  4. Step 4: Simplify right side
    123,603.28x = 11,921,024,537.15
  5. Step 5: Solve for x
    x = 11,921,024,537.15/123,603.28
  6. Step 6: Final answer
    x = 96,445.86

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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.