Home / 142,628.42-196,833.77-78,966.27

Finding the Fourth Proportional to 142,628.42, 196,833.77 and 78,966.27

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Solution

The fourth proportional to 142,628.42, 196,833.77 and 78,966.27 is: 108,977.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,628.42 : 196,833.77 = 78,966.27 : x
  2. Step 2: Convert to fraction form
    142,628.42/196,833.77 = 78,966.27/x
  3. Step 3: Cross multiply
    142,628.42x = 196,833.77 × 78,966.27
  4. Step 4: Simplify right side
    142,628.42x = 15,543,228,626.94
  5. Step 5: Solve for x
    x = 15,543,228,626.94/142,628.42
  6. Step 6: Final answer
    x = 108,977.08

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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.