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Finding the Fourth Proportional to 151,126.80, 227,099.40 and 81,056.40

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Solution

The fourth proportional to 151,126.80, 227,099.40 and 81,056.40 is: 121,804.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,126.80 : 227,099.40 = 81,056.40 : x
  2. Step 2: Convert to fraction form
    151,126.80/227,099.40 = 81,056.40/x
  3. Step 3: Cross multiply
    151,126.80x = 227,099.40 × 81,056.40
  4. Step 4: Simplify right side
    151,126.80x = 18,407,859,806.16
  5. Step 5: Solve for x
    x = 18,407,859,806.16/151,126.80
  6. Step 6: Final answer
    x = 121,804.07

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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.