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Finding the Fourth Proportional to 126,685.44, 189,958 and 51,858.16

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Solution

The fourth proportional to 126,685.44, 189,958 and 51,858.16 is: 77,758.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,685.44 : 189,958 = 51,858.16 : x
  2. Step 2: Convert to fraction form
    126,685.44/189,958 = 51,858.16/x
  3. Step 3: Cross multiply
    126,685.44x = 189,958 × 51,858.16
  4. Step 4: Simplify right side
    126,685.44x = 9,850,872,357.28
  5. Step 5: Solve for x
    x = 9,850,872,357.28/126,685.44
  6. Step 6: Final answer
    x = 77,758.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.