Home / 126,643.68-189,895.30-51,816.32

Finding the Fourth Proportional to 126,643.68, 189,895.30 and 51,816.32

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Solution

The fourth proportional to 126,643.68, 189,895.30 and 51,816.32 is: 77,695.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,643.68 : 189,895.30 = 51,816.32 : x
  2. Step 2: Convert to fraction form
    126,643.68/189,895.30 = 51,816.32/x
  3. Step 3: Cross multiply
    126,643.68x = 189,895.30 × 51,816.32
  4. Step 4: Simplify right side
    126,643.68x = 9,839,675,631.30
  5. Step 5: Solve for x
    x = 9,839,675,631.30/126,643.68
  6. Step 6: Final answer
    x = 77,695.75

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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.