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Finding the Fourth Proportional to 185,903.28, 256,546.08 and 101,021.76

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Solution

The fourth proportional to 185,903.28, 256,546.08 and 101,021.76 is: 139,409.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,903.28 : 256,546.08 = 101,021.76 : x
  2. Step 2: Convert to fraction form
    185,903.28/256,546.08 = 101,021.76/x
  3. Step 3: Cross multiply
    185,903.28x = 256,546.08 × 101,021.76
  4. Step 4: Simplify right side
    185,903.28x = 25,916,736,522.70
  5. Step 5: Solve for x
    x = 25,916,736,522.70/185,903.28
  6. Step 6: Final answer
    x = 139,409.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.