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Finding the Fourth Proportional to 173,187.60, 259,538.40 and 137,709.60

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Solution

The fourth proportional to 173,187.60, 259,538.40 and 137,709.60 is: 206,371.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,187.60 : 259,538.40 = 137,709.60 : x
  2. Step 2: Convert to fraction form
    173,187.60/259,538.40 = 137,709.60/x
  3. Step 3: Cross multiply
    173,187.60x = 259,538.40 × 137,709.60
  4. Step 4: Simplify right side
    173,187.60x = 35,740,929,248.64
  5. Step 5: Solve for x
    x = 35,740,929,248.64/173,187.60
  6. Step 6: Final answer
    x = 206,371.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.