Home / 131,819.98-181,910.58-71,389.21

Finding the Fourth Proportional to 131,819.98, 181,910.58 and 71,389.21

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Solution

The fourth proportional to 131,819.98, 181,910.58 and 71,389.21 is: 98,516.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,819.98 : 181,910.58 = 71,389.21 : x
  2. Step 2: Convert to fraction form
    131,819.98/181,910.58 = 71,389.21/x
  3. Step 3: Cross multiply
    131,819.98x = 181,910.58 × 71,389.21
  4. Step 4: Simplify right side
    131,819.98x = 12,986,452,596.84
  5. Step 5: Solve for x
    x = 12,986,452,596.84/131,819.98
  6. Step 6: Final answer
    x = 98,516.57

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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.