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Finding the Fourth Proportional to 172,935.71, 238,704.45 and 101,338.79

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Solution

The fourth proportional to 172,935.71, 238,704.45 and 101,338.79 is: 139,878.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,935.71 : 238,704.45 = 101,338.79 : x
  2. Step 2: Convert to fraction form
    172,935.71/238,704.45 = 101,338.79/x
  3. Step 3: Cross multiply
    172,935.71x = 238,704.45 × 101,338.79
  4. Step 4: Simplify right side
    172,935.71x = 24,190,020,130.62
  5. Step 5: Solve for x
    x = 24,190,020,130.62/172,935.71
  6. Step 6: Final answer
    x = 139,878.69

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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.