Home / 131,386.56-181,313.64-71,770.56

Finding the Fourth Proportional to 131,386.56, 181,313.64 and 71,770.56

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Solution

The fourth proportional to 131,386.56, 181,313.64 and 71,770.56 is: 99,043.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,386.56 : 181,313.64 = 71,770.56 : x
  2. Step 2: Convert to fraction form
    131,386.56/181,313.64 = 71,770.56/x
  3. Step 3: Cross multiply
    131,386.56x = 181,313.64 × 71,770.56
  4. Step 4: Simplify right side
    131,386.56x = 13,012,981,478.44
  5. Step 5: Solve for x
    x = 13,012,981,478.44/131,386.56
  6. Step 6: Final answer
    x = 99,043.48

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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.