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Finding the Fourth Proportional to 148,503.60, 222,712.20 and 81,975.60

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Solution

The fourth proportional to 148,503.60, 222,712.20 and 81,975.60 is: 122,939.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,503.60 : 222,712.20 = 81,975.60 : x
  2. Step 2: Convert to fraction form
    148,503.60/222,712.20 = 81,975.60/x
  3. Step 3: Cross multiply
    148,503.60x = 222,712.20 × 81,975.60
  4. Step 4: Simplify right side
    148,503.60x = 18,256,966,222.32
  5. Step 5: Solve for x
    x = 18,256,966,222.32/148,503.60
  6. Step 6: Final answer
    x = 122,939.55

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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.