Home / 131,428.88-181,372.01-70,999.52

Finding the Fourth Proportional to 131,428.88, 181,372.01 and 70,999.52

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Solution

The fourth proportional to 131,428.88, 181,372.01 and 70,999.52 is: 97,979.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,428.88 : 181,372.01 = 70,999.52 : x
  2. Step 2: Convert to fraction form
    131,428.88/181,372.01 = 70,999.52/x
  3. Step 3: Cross multiply
    131,428.88x = 181,372.01 × 70,999.52
  4. Step 4: Simplify right side
    131,428.88x = 12,877,324,744.58
  5. Step 5: Solve for x
    x = 12,877,324,744.58/131,428.88
  6. Step 6: Final answer
    x = 97,979.42

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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.