Home / 125,413.92-187,944-69,279.36

Finding the Fourth Proportional to 125,413.92, 187,944 and 69,279.36

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Solution

The fourth proportional to 125,413.92, 187,944 and 69,279.36 is: 103,821.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,413.92 : 187,944 = 69,279.36 : x
  2. Step 2: Convert to fraction form
    125,413.92/187,944 = 69,279.36/x
  3. Step 3: Cross multiply
    125,413.92x = 187,944 × 69,279.36
  4. Step 4: Simplify right side
    125,413.92x = 13,020,640,035.84
  5. Step 5: Solve for x
    x = 13,020,640,035.84/125,413.92
  6. Step 6: Final answer
    x = 103,821.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.