Home / 131,374.80-181,286.89-74,011

Finding the Fourth Proportional to 131,374.80, 181,286.89 and 74,011

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Solution

The fourth proportional to 131,374.80, 181,286.89 and 74,011 is: 102,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,374.80 : 181,286.89 = 74,011 : x
  2. Step 2: Convert to fraction form
    131,374.80/181,286.89 = 74,011/x
  3. Step 3: Cross multiply
    131,374.80x = 181,286.89 × 74,011
  4. Step 4: Simplify right side
    131,374.80x = 13,417,224,015.79
  5. Step 5: Solve for x
    x = 13,417,224,015.79/131,374.80
  6. Step 6: Final answer
    x = 102,129.36

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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.