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Finding the Fourth Proportional to 172,812.34, 238,511.55 and 137,273.59

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Solution

The fourth proportional to 172,812.34, 238,511.55 and 137,273.59 is: 189,461.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,812.34 : 238,511.55 = 137,273.59 : x
  2. Step 2: Convert to fraction form
    172,812.34/238,511.55 = 137,273.59/x
  3. Step 3: Cross multiply
    172,812.34x = 238,511.55 × 137,273.59
  4. Step 4: Simplify right side
    172,812.34x = 32,741,336,724.96
  5. Step 5: Solve for x
    x = 32,741,336,724.96/172,812.34
  6. Step 6: Final answer
    x = 189,461.80

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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.