Home / 131,265.56-181,168.35-99,379.10

Finding the Fourth Proportional to 131,265.56, 181,168.35 and 99,379.10

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Solution

The fourth proportional to 131,265.56, 181,168.35 and 99,379.10 is: 137,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,265.56 : 181,168.35 = 99,379.10 : x
  2. Step 2: Convert to fraction form
    131,265.56/181,168.35 = 99,379.10/x
  3. Step 3: Cross multiply
    131,265.56x = 181,168.35 × 99,379.10
  4. Step 4: Simplify right side
    131,265.56x = 18,004,347,651.73
  5. Step 5: Solve for x
    x = 18,004,347,651.73/131,265.56
  6. Step 6: Final answer
    x = 137,159.72

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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.