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Finding the Fourth Proportional to 189,167.40, 261,052.76 and 104,287.50

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Solution

The fourth proportional to 189,167.40, 261,052.76 and 104,287.50 is: 143,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,167.40 : 261,052.76 = 104,287.50 : x
  2. Step 2: Convert to fraction form
    189,167.40/261,052.76 = 104,287.50/x
  3. Step 3: Cross multiply
    189,167.40x = 261,052.76 × 104,287.50
  4. Step 4: Simplify right side
    189,167.40x = 27,224,539,708.50
  5. Step 5: Solve for x
    x = 27,224,539,708.50/189,167.40
  6. Step 6: Final answer
    x = 143,917.71

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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.