Home / 100,389.70-138,542.13-60,095.67

Finding the Fourth Proportional to 100,389.70, 138,542.13 and 60,095.67

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Solution

The fourth proportional to 100,389.70, 138,542.13 and 60,095.67 is: 82,934.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,389.70 : 138,542.13 = 60,095.67 : x
  2. Step 2: Convert to fraction form
    100,389.70/138,542.13 = 60,095.67/x
  3. Step 3: Cross multiply
    100,389.70x = 138,542.13 × 60,095.67
  4. Step 4: Simplify right side
    100,389.70x = 8,325,782,125.58
  5. Step 5: Solve for x
    x = 8,325,782,125.58/100,389.70
  6. Step 6: Final answer
    x = 82,934.63

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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.