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Finding the Fourth Proportional to 172,297.60, 237,735.81 and 100,663.79

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Solution

The fourth proportional to 172,297.60, 237,735.81 and 100,663.79 is: 138,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,297.60 : 237,735.81 = 100,663.79 : x
  2. Step 2: Convert to fraction form
    172,297.60/237,735.81 = 100,663.79/x
  3. Step 3: Cross multiply
    172,297.60x = 237,735.81 × 100,663.79
  4. Step 4: Simplify right side
    172,297.60x = 23,931,386,464.64
  5. Step 5: Solve for x
    x = 23,931,386,464.64/172,297.60
  6. Step 6: Final answer
    x = 138,895.65

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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.