Home / 131,399.32-181,331.24-74,810.70

Finding the Fourth Proportional to 131,399.32, 181,331.24 and 74,810.70

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Solution

The fourth proportional to 131,399.32, 181,331.24 and 74,810.70 is: 103,238.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,399.32 : 181,331.24 = 74,810.70 : x
  2. Step 2: Convert to fraction form
    131,399.32/181,331.24 = 74,810.70/x
  3. Step 3: Cross multiply
    131,399.32x = 181,331.24 × 74,810.70
  4. Step 4: Simplify right side
    131,399.32x = 13,565,516,996.27
  5. Step 5: Solve for x
    x = 13,565,516,996.27/131,399.32
  6. Step 6: Final answer
    x = 103,238.87

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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.