Home / 131,122.54-180,921.99-76,664.22

Finding the Fourth Proportional to 131,122.54, 180,921.99 and 76,664.22

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Solution

The fourth proportional to 131,122.54, 180,921.99 and 76,664.22 is: 105,780.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,122.54 : 180,921.99 = 76,664.22 : x
  2. Step 2: Convert to fraction form
    131,122.54/180,921.99 = 76,664.22/x
  3. Step 3: Cross multiply
    131,122.54x = 180,921.99 × 76,664.22
  4. Step 4: Simplify right side
    131,122.54x = 13,870,243,244.20
  5. Step 5: Solve for x
    x = 13,870,243,244.20/131,122.54
  6. Step 6: Final answer
    x = 105,780.77

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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.