Home / 131,812.54-181,900.37-71,381.79

Finding the Fourth Proportional to 131,812.54, 181,900.37 and 71,381.79

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Solution

The fourth proportional to 131,812.54, 181,900.37 and 71,381.79 is: 98,506.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,812.54 : 181,900.37 = 71,381.79 : x
  2. Step 2: Convert to fraction form
    131,812.54/181,900.37 = 71,381.79/x
  3. Step 3: Cross multiply
    131,812.54x = 181,900.37 × 71,381.79
  4. Step 4: Simplify right side
    131,812.54x = 12,984,374,190.72
  5. Step 5: Solve for x
    x = 12,984,374,190.72/131,812.54
  6. Step 6: Final answer
    x = 98,506.37

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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.