Home / 131,747.31-181,811.93-71,318.00

Finding the Fourth Proportional to 131,747.31, 181,811.93 and 71,318.00

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Solution

The fourth proportional to 131,747.31, 181,811.93 and 71,318.00 is: 98,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,747.31 : 181,811.93 = 71,318.00 : x
  2. Step 2: Convert to fraction form
    131,747.31/181,811.93 = 71,318.00/x
  3. Step 3: Cross multiply
    131,747.31x = 181,811.93 × 71,318.00
  4. Step 4: Simplify right side
    131,747.31x = 12,966,463,321.68
  5. Step 5: Solve for x
    x = 12,966,463,321.68/131,747.31
  6. Step 6: Final answer
    x = 98,419.19

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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.