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Finding the Fourth Proportional to 121,458.60, 182,144.70 and 54,930.60

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Solution

The fourth proportional to 121,458.60, 182,144.70 and 54,930.60 is: 82,376.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,458.60 : 182,144.70 = 54,930.60 : x
  2. Step 2: Convert to fraction form
    121,458.60/182,144.70 = 54,930.60/x
  3. Step 3: Cross multiply
    121,458.60x = 182,144.70 × 54,930.60
  4. Step 4: Simplify right side
    121,458.60x = 10,005,317,657.82
  5. Step 5: Solve for x
    x = 10,005,317,657.82/121,458.60
  6. Step 6: Final answer
    x = 82,376.36

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1.5x scale

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.