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Finding the Fourth Proportional to 113,150, 169,725 and 39,278

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Solution

The fourth proportional to 113,150, 169,725 and 39,278 is: 58,917

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,150 : 169,725 = 39,278 : x
  2. Step 2: Convert to fraction form
    113,150/169,725 = 39,278/x
  3. Step 3: Cross multiply
    113,150x = 169,725 × 39,278
  4. Step 4: Simplify right side
    113,150x = 6,666,458,550
  5. Step 5: Solve for x
    x = 6,666,458,550/113,150
  6. Step 6: Final answer
    x = 58,917

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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.