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Finding the Fourth Proportional to 172,604.40, 238,172.04 and 97,138.32

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Solution

The fourth proportional to 172,604.40, 238,172.04 and 97,138.32 is: 134,038.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,604.40 : 238,172.04 = 97,138.32 : x
  2. Step 2: Convert to fraction form
    172,604.40/238,172.04 = 97,138.32/x
  3. Step 3: Cross multiply
    172,604.40x = 238,172.04 × 97,138.32
  4. Step 4: Simplify right side
    172,604.40x = 23,135,631,836.57
  5. Step 5: Solve for x
    x = 23,135,631,836.57/172,604.40
  6. Step 6: Final answer
    x = 134,038.48

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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.