Home / 100,325.81-138,401.91-60,031.46

Finding the Fourth Proportional to 100,325.81, 138,401.91 and 60,031.46

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Solution

The fourth proportional to 100,325.81, 138,401.91 and 60,031.46 is: 82,814.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,325.81 : 138,401.91 = 60,031.46 : x
  2. Step 2: Convert to fraction form
    100,325.81/138,401.91 = 60,031.46/x
  3. Step 3: Cross multiply
    100,325.81x = 138,401.91 × 60,031.46
  4. Step 4: Simplify right side
    100,325.81x = 8,308,468,724.09
  5. Step 5: Solve for x
    x = 8,308,468,724.09/100,325.81
  6. Step 6: Final answer
    x = 82,814.87

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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.