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Finding the Fourth Proportional to 189,684.48, 261,775.08 and 104,799.72

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Solution

The fourth proportional to 189,684.48, 261,775.08 and 104,799.72 is: 144,629.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,684.48 : 261,775.08 = 104,799.72 : x
  2. Step 2: Convert to fraction form
    189,684.48/261,775.08 = 104,799.72/x
  3. Step 3: Cross multiply
    189,684.48x = 261,775.08 × 104,799.72
  4. Step 4: Simplify right side
    189,684.48x = 27,433,955,086.98
  5. Step 5: Solve for x
    x = 27,433,955,086.98/189,684.48
  6. Step 6: Final answer
    x = 144,629.41

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1.5x scale

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.