Home / 131,701.46-181,749.15-77,286.20

Finding the Fourth Proportional to 131,701.46, 181,749.15 and 77,286.20

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Solution

The fourth proportional to 131,701.46, 181,749.15 and 77,286.20 is: 106,655.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,701.46 : 181,749.15 = 77,286.20 : x
  2. Step 2: Convert to fraction form
    131,701.46/181,749.15 = 77,286.20/x
  3. Step 3: Cross multiply
    131,701.46x = 181,749.15 × 77,286.20
  4. Step 4: Simplify right side
    131,701.46x = 14,046,700,247.98
  5. Step 5: Solve for x
    x = 14,046,700,247.98/131,701.46
  6. Step 6: Final answer
    x = 106,655.62

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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.