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Finding the Fourth Proportional to 123,125.92, 169,897.40 and 69,413.20

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Solution

The fourth proportional to 123,125.92, 169,897.40 and 69,413.20 is: 95,780.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,125.92 : 169,897.40 = 69,413.20 : x
  2. Step 2: Convert to fraction form
    123,125.92/169,897.40 = 69,413.20/x
  3. Step 3: Cross multiply
    123,125.92x = 169,897.40 × 69,413.20
  4. Step 4: Simplify right side
    123,125.92x = 11,793,122,205.68
  5. Step 5: Solve for x
    x = 11,793,122,205.68/123,125.92
  6. Step 6: Final answer
    x = 95,780.99

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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.