Home / 131,836.48-181,933.24-71,405.72

Finding the Fourth Proportional to 131,836.48, 181,933.24 and 71,405.72

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Solution

The fourth proportional to 131,836.48, 181,933.24 and 71,405.72 is: 98,539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,836.48 : 181,933.24 = 71,405.72 : x
  2. Step 2: Convert to fraction form
    131,836.48/181,933.24 = 71,405.72/x
  3. Step 3: Cross multiply
    131,836.48x = 181,933.24 × 71,405.72
  4. Step 4: Simplify right side
    131,836.48x = 12,991,073,994.13
  5. Step 5: Solve for x
    x = 12,991,073,994.13/131,836.48
  6. Step 6: Final answer
    x = 98,539.30

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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.