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Finding the Fourth Proportional to 189,703.20, 261,766.44 and 104,820.60

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Solution

The fourth proportional to 189,703.20, 261,766.44 and 104,820.60 is: 144,639.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,703.20 : 261,766.44 = 104,820.60 : x
  2. Step 2: Convert to fraction form
    189,703.20/261,766.44 = 104,820.60/x
  3. Step 3: Cross multiply
    189,703.20x = 261,766.44 × 104,820.60
  4. Step 4: Simplify right side
    189,703.20x = 27,438,515,300.66
  5. Step 5: Solve for x
    x = 27,438,515,300.66/189,703.20
  6. Step 6: Final answer
    x = 144,639.18

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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.