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Finding the Fourth Proportional to 172,807.97, 238,520.09 and 112,543.97

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Solution

The fourth proportional to 172,807.97, 238,520.09 and 112,543.97 is: 155,340.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,807.97 : 238,520.09 = 112,543.97 : x
  2. Step 2: Convert to fraction form
    172,807.97/238,520.09 = 112,543.97/x
  3. Step 3: Cross multiply
    172,807.97x = 238,520.09 × 112,543.97
  4. Step 4: Simplify right side
    172,807.97x = 26,843,996,942.12
  5. Step 5: Solve for x
    x = 26,843,996,942.12/172,807.97
  6. Step 6: Final answer
    x = 155,340.04

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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.