Home / 143,228.52-197,673.48-86,639.76

Finding the Fourth Proportional to 143,228.52, 197,673.48 and 86,639.76

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Solution

The fourth proportional to 143,228.52, 197,673.48 and 86,639.76 is: 119,573.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,228.52 : 197,673.48 = 86,639.76 : x
  2. Step 2: Convert to fraction form
    143,228.52/197,673.48 = 86,639.76/x
  3. Step 3: Cross multiply
    143,228.52x = 197,673.48 × 86,639.76
  4. Step 4: Simplify right side
    143,228.52x = 17,126,382,865.56
  5. Step 5: Solve for x
    x = 17,126,382,865.56/143,228.52
  6. Step 6: Final answer
    x = 119,573.83

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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.