Home / 190,643.28-263,119.20-105,787.68

Finding the Fourth Proportional to 190,643.28, 263,119.20 and 105,787.68

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Solution

The fourth proportional to 190,643.28, 263,119.20 and 105,787.68 is: 146,004.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,643.28 : 263,119.20 = 105,787.68 : x
  2. Step 2: Convert to fraction form
    190,643.28/263,119.20 = 105,787.68/x
  3. Step 3: Cross multiply
    190,643.28x = 263,119.20 × 105,787.68
  4. Step 4: Simplify right side
    190,643.28x = 27,834,769,731.46
  5. Step 5: Solve for x
    x = 27,834,769,731.46/190,643.28
  6. Step 6: Final answer
    x = 146,004.46

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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.