Home / 142,291.04-196,361.71-78,628.84

Finding the Fourth Proportional to 142,291.04, 196,361.71 and 78,628.84

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Solution

The fourth proportional to 142,291.04, 196,361.71 and 78,628.84 is: 108,507.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,291.04 : 196,361.71 = 78,628.84 : x
  2. Step 2: Convert to fraction form
    142,291.04/196,361.71 = 78,628.84/x
  3. Step 3: Cross multiply
    142,291.04x = 196,361.71 × 78,628.84
  4. Step 4: Simplify right side
    142,291.04x = 15,439,692,790.24
  5. Step 5: Solve for x
    x = 15,439,692,790.24/142,291.04
  6. Step 6: Final answer
    x = 108,507.83

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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.