Home / 100,105.20-138,154.62-59,818.11

Finding the Fourth Proportional to 100,105.20, 138,154.62 and 59,818.11

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Solution

The fourth proportional to 100,105.20, 138,154.62 and 59,818.11 is: 82,554.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,105.20 : 138,154.62 = 59,818.11 : x
  2. Step 2: Convert to fraction form
    100,105.20/138,154.62 = 59,818.11/x
  3. Step 3: Cross multiply
    100,105.20x = 138,154.62 × 59,818.11
  4. Step 4: Simplify right side
    100,105.20x = 8,264,148,256.17
  5. Step 5: Solve for x
    x = 8,264,148,256.17/100,105.20
  6. Step 6: Final answer
    x = 82,554.64

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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.