Home / 131,172.30-181,044.66-83,416.41

Finding the Fourth Proportional to 131,172.30, 181,044.66 and 83,416.41

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Solution

The fourth proportional to 131,172.30, 181,044.66 and 83,416.41 is: 115,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,172.30 : 181,044.66 = 83,416.41 : x
  2. Step 2: Convert to fraction form
    131,172.30/181,044.66 = 83,416.41/x
  3. Step 3: Cross multiply
    131,172.30x = 181,044.66 × 83,416.41
  4. Step 4: Simplify right side
    131,172.30x = 15,102,095,586.87
  5. Step 5: Solve for x
    x = 15,102,095,586.87/131,172.30
  6. Step 6: Final answer
    x = 115,131.74

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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.