Home / 131,861.10-181,964.16-74,502.84

Finding the Fourth Proportional to 131,861.10, 181,964.16 and 74,502.84

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Solution

The fourth proportional to 131,861.10, 181,964.16 and 74,502.84 is: 102,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,861.10 : 181,964.16 = 74,502.84 : x
  2. Step 2: Convert to fraction form
    131,861.10/181,964.16 = 74,502.84/x
  3. Step 3: Cross multiply
    131,861.10x = 181,964.16 × 74,502.84
  4. Step 4: Simplify right side
    131,861.10x = 13,556,846,698.21
  5. Step 5: Solve for x
    x = 13,556,846,698.21/131,861.10
  6. Step 6: Final answer
    x = 102,811.57

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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.