Home / 131,578.93-181,579.95-72,644.24

Finding the Fourth Proportional to 131,578.93, 181,579.95 and 72,644.24

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Solution

The fourth proportional to 131,578.93, 181,579.95 and 72,644.24 is: 100,249.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,578.93 : 181,579.95 = 72,644.24 : x
  2. Step 2: Convert to fraction form
    131,578.93/181,579.95 = 72,644.24/x
  3. Step 3: Cross multiply
    131,578.93x = 181,579.95 × 72,644.24
  4. Step 4: Simplify right side
    131,578.93x = 13,190,737,466.99
  5. Step 5: Solve for x
    x = 13,190,737,466.99/131,578.93
  6. Step 6: Final answer
    x = 100,249.62

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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.