Home / 100,390.08-138,542.65-60,096.04

Finding the Fourth Proportional to 100,390.08, 138,542.65 and 60,096.04

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Solution

The fourth proportional to 100,390.08, 138,542.65 and 60,096.04 is: 82,935.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,390.08 : 138,542.65 = 60,096.04 : x
  2. Step 2: Convert to fraction form
    100,390.08/138,542.65 = 60,096.04/x
  3. Step 3: Cross multiply
    100,390.08x = 138,542.65 × 60,096.04
  4. Step 4: Simplify right side
    100,390.08x = 8,325,864,636.11
  5. Step 5: Solve for x
    x = 8,325,864,636.11/100,390.08
  6. Step 6: Final answer
    x = 82,935.13

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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.