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Finding the Fourth Proportional to 172,358.72, 237,775.20 and 100,741.76

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Solution

The fourth proportional to 172,358.72, 237,775.20 and 100,741.76 is: 138,976.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,358.72 : 237,775.20 = 100,741.76 : x
  2. Step 2: Convert to fraction form
    172,358.72/237,775.20 = 100,741.76/x
  3. Step 3: Cross multiply
    172,358.72x = 237,775.20 × 100,741.76
  4. Step 4: Simplify right side
    172,358.72x = 23,953,892,132.35
  5. Step 5: Solve for x
    x = 23,953,892,132.35/172,358.72
  6. Step 6: Final answer
    x = 138,976.97

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1.5x scale

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.