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Finding the Fourth Proportional to 172,979.84, 238,713.60 and 101,361.92

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Solution

The fourth proportional to 172,979.84, 238,713.60 and 101,361.92 is: 139,880.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,979.84 : 238,713.60 = 101,361.92 : x
  2. Step 2: Convert to fraction form
    172,979.84/238,713.60 = 101,361.92/x
  3. Step 3: Cross multiply
    172,979.84x = 238,713.60 × 101,361.92
  4. Step 4: Simplify right side
    172,979.84x = 24,196,468,826.11
  5. Step 5: Solve for x
    x = 24,196,468,826.11/172,979.84
  6. Step 6: Final answer
    x = 139,880.28

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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.