Home / 140,448.72-193,703.76-100,149.60

Finding the Fourth Proportional to 140,448.72, 193,703.76 and 100,149.60

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Solution

The fourth proportional to 140,448.72, 193,703.76 and 100,149.60 is: 138,124.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,448.72 : 193,703.76 = 100,149.60 : x
  2. Step 2: Convert to fraction form
    140,448.72/193,703.76 = 100,149.60/x
  3. Step 3: Cross multiply
    140,448.72x = 193,703.76 × 100,149.60
  4. Step 4: Simplify right side
    140,448.72x = 19,399,354,082.50
  5. Step 5: Solve for x
    x = 19,399,354,082.50/140,448.72
  6. Step 6: Final answer
    x = 138,124.11

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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.