Home / 131,770.24-181,652.16-81,381.76

Finding the Fourth Proportional to 131,770.24, 181,652.16 and 81,381.76

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Solution

The fourth proportional to 131,770.24, 181,652.16 and 81,381.76 is: 112,189.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,770.24 : 181,652.16 = 81,381.76 : x
  2. Step 2: Convert to fraction form
    131,770.24/181,652.16 = 81,381.76/x
  3. Step 3: Cross multiply
    131,770.24x = 181,652.16 × 81,381.76
  4. Step 4: Simplify right side
    131,770.24x = 14,783,172,488.60
  5. Step 5: Solve for x
    x = 14,783,172,488.60/131,770.24
  6. Step 6: Final answer
    x = 112,189.01

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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.