Home / 123,839.13-170,950.31-83,607.39

Finding the Fourth Proportional to 123,839.13, 170,950.31 and 83,607.39

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Solution

The fourth proportional to 123,839.13, 170,950.31 and 83,607.39 is: 115,413.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,839.13 : 170,950.31 = 83,607.39 : x
  2. Step 2: Convert to fraction form
    123,839.13/170,950.31 = 83,607.39/x
  3. Step 3: Cross multiply
    123,839.13x = 170,950.31 × 83,607.39
  4. Step 4: Simplify right side
    123,839.13x = 14,292,709,107.77
  5. Step 5: Solve for x
    x = 14,292,709,107.77/123,839.13
  6. Step 6: Final answer
    x = 115,413.51

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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.