Home / 131,999.28-182,085.48-78,232.56

Finding the Fourth Proportional to 131,999.28, 182,085.48 and 78,232.56

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Solution

The fourth proportional to 131,999.28, 182,085.48 and 78,232.56 is: 107,917.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,999.28 : 182,085.48 = 78,232.56 : x
  2. Step 2: Convert to fraction form
    131,999.28/182,085.48 = 78,232.56/x
  3. Step 3: Cross multiply
    131,999.28x = 182,085.48 × 78,232.56
  4. Step 4: Simplify right side
    131,999.28x = 14,245,013,239.23
  5. Step 5: Solve for x
    x = 14,245,013,239.23/131,999.28
  6. Step 6: Final answer
    x = 107,917.36

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1.5x scale

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.