Home / 123,128.13-169,895.01-69,413.13

Finding the Fourth Proportional to 123,128.13, 169,895.01 and 69,413.13

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Solution

The fourth proportional to 123,128.13, 169,895.01 and 69,413.13 is: 95,777.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,128.13 : 169,895.01 = 69,413.13 : x
  2. Step 2: Convert to fraction form
    123,128.13/169,895.01 = 69,413.13/x
  3. Step 3: Cross multiply
    123,128.13x = 169,895.01 × 69,413.13
  4. Step 4: Simplify right side
    123,128.13x = 11,792,944,415.48
  5. Step 5: Solve for x
    x = 11,792,944,415.48/123,128.13
  6. Step 6: Final answer
    x = 95,777.82

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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.