Home / 131,801.41-181,886.80-71,372.05

Finding the Fourth Proportional to 131,801.41, 181,886.80 and 71,372.05

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Solution

The fourth proportional to 131,801.41, 181,886.80 and 71,372.05 is: 98,493.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,801.41 : 181,886.80 = 71,372.05 : x
  2. Step 2: Convert to fraction form
    131,801.41/181,886.80 = 71,372.05/x
  3. Step 3: Cross multiply
    131,801.41x = 181,886.80 × 71,372.05
  4. Step 4: Simplify right side
    131,801.41x = 12,981,633,783.94
  5. Step 5: Solve for x
    x = 12,981,633,783.94/131,801.41
  6. Step 6: Final answer
    x = 98,493.89

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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.