Home / 254,639.60-381,439.36-121,116

Finding the Fourth Proportional to 254,639.60, 381,439.36 and 121,116

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Solution

The fourth proportional to 254,639.60, 381,439.36 and 121,116 is: 181,426.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,639.60 : 381,439.36 = 121,116 : x
  2. Step 2: Convert to fraction form
    254,639.60/381,439.36 = 121,116/x
  3. Step 3: Cross multiply
    254,639.60x = 381,439.36 × 121,116
  4. Step 4: Simplify right side
    254,639.60x = 46,198,409,525.76
  5. Step 5: Solve for x
    x = 46,198,409,525.76/254,639.60
  6. Step 6: Final answer
    x = 181,426.65

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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.