Home / 87,151.21-130,553.47-68,343.01

Finding the Fourth Proportional to 87,151.21, 130,553.47 and 68,343.01

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Solution

The fourth proportional to 87,151.21, 130,553.47 and 68,343.01 is: 102,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,151.21 : 130,553.47 = 68,343.01 : x
  2. Step 2: Convert to fraction form
    87,151.21/130,553.47 = 68,343.01/x
  3. Step 3: Cross multiply
    87,151.21x = 130,553.47 × 68,343.01
  4. Step 4: Simplify right side
    87,151.21x = 8,922,417,105.74
  5. Step 5: Solve for x
    x = 8,922,417,105.74/87,151.21
  6. Step 6: Final answer
    x = 102,378.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.