Home / 131,878.20-181,991.66-71,450.36

Finding the Fourth Proportional to 131,878.20, 181,991.66 and 71,450.36

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Solution

The fourth proportional to 131,878.20, 181,991.66 and 71,450.36 is: 98,601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,878.20 : 181,991.66 = 71,450.36 : x
  2. Step 2: Convert to fraction form
    131,878.20/181,991.66 = 71,450.36/x
  3. Step 3: Cross multiply
    131,878.20x = 181,991.66 × 71,450.36
  4. Step 4: Simplify right side
    131,878.20x = 13,003,369,624.00
  5. Step 5: Solve for x
    x = 13,003,369,624.00/131,878.20
  6. Step 6: Final answer
    x = 98,601.36

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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.