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Finding the Fourth Proportional to 189,675.87, 261,755.46 and 104,794.89

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Solution

The fourth proportional to 189,675.87, 261,755.46 and 104,794.89 is: 144,618.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,675.87 : 261,755.46 = 104,794.89 : x
  2. Step 2: Convert to fraction form
    189,675.87/261,755.46 = 104,794.89/x
  3. Step 3: Cross multiply
    189,675.87x = 261,755.46 × 104,794.89
  4. Step 4: Simplify right side
    189,675.87x = 27,430,634,637.60
  5. Step 5: Solve for x
    x = 27,430,634,637.60/189,675.87
  6. Step 6: Final answer
    x = 144,618.47

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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.