Home / 131,979.09-182,157.62-78,293.91

Finding the Fourth Proportional to 131,979.09, 182,157.62 and 78,293.91

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Solution

The fourth proportional to 131,979.09, 182,157.62 and 78,293.91 is: 108,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,979.09 : 182,157.62 = 78,293.91 : x
  2. Step 2: Convert to fraction form
    131,979.09/182,157.62 = 78,293.91/x
  3. Step 3: Cross multiply
    131,979.09x = 182,157.62 × 78,293.91
  4. Step 4: Simplify right side
    131,979.09x = 14,261,831,914.62
  5. Step 5: Solve for x
    x = 14,261,831,914.62/131,979.09
  6. Step 6: Final answer
    x = 108,061.30

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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.