Home / 122,143.20-183,422.91-79,521.23

Finding the Fourth Proportional to 122,143.20, 183,422.91 and 79,521.23

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Solution

The fourth proportional to 122,143.20, 183,422.91 and 79,521.23 is: 119,417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,143.20 : 183,422.91 = 79,521.23 : x
  2. Step 2: Convert to fraction form
    122,143.20/183,422.91 = 79,521.23/x
  3. Step 3: Cross multiply
    122,143.20x = 183,422.91 × 79,521.23
  4. Step 4: Simplify right side
    122,143.20x = 14,586,015,413.38
  5. Step 5: Solve for x
    x = 14,586,015,413.38/122,143.20
  6. Step 6: Final answer
    x = 119,417.33

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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.