Home / 143,281.62-197,719.02-78,749.46

Finding the Fourth Proportional to 143,281.62, 197,719.02 and 78,749.46

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Solution

The fourth proportional to 143,281.62, 197,719.02 and 78,749.46 is: 108,668.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,281.62 : 197,719.02 = 78,749.46 : x
  2. Step 2: Convert to fraction form
    143,281.62/197,719.02 = 78,749.46/x
  3. Step 3: Cross multiply
    143,281.62x = 197,719.02 × 78,749.46
  4. Step 4: Simplify right side
    143,281.62x = 15,570,266,056.73
  5. Step 5: Solve for x
    x = 15,570,266,056.73/143,281.62
  6. Step 6: Final answer
    x = 108,668.97

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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.