Home / 131,561.62-181,638.05-91,261.28

Finding the Fourth Proportional to 131,561.62, 181,638.05 and 91,261.28

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Solution

The fourth proportional to 131,561.62, 181,638.05 and 91,261.28 is: 125,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,561.62 : 181,638.05 = 91,261.28 : x
  2. Step 2: Convert to fraction form
    131,561.62/181,638.05 = 91,261.28/x
  3. Step 3: Cross multiply
    131,561.62x = 181,638.05 × 91,261.28
  4. Step 4: Simplify right side
    131,561.62x = 16,576,520,483.40
  5. Step 5: Solve for x
    x = 16,576,520,483.40/131,561.62
  6. Step 6: Final answer
    x = 125,998.15

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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.