Home / 143,423.34-197,928.96-78,895.26

Finding the Fourth Proportional to 143,423.34, 197,928.96 and 78,895.26

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Solution

The fourth proportional to 143,423.34, 197,928.96 and 78,895.26 is: 108,878.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,423.34 : 197,928.96 = 78,895.26 : x
  2. Step 2: Convert to fraction form
    143,423.34/197,928.96 = 78,895.26/x
  3. Step 3: Cross multiply
    143,423.34x = 197,928.96 × 78,895.26
  4. Step 4: Simplify right side
    143,423.34x = 15,615,656,760.73
  5. Step 5: Solve for x
    x = 15,615,656,760.73/143,423.34
  6. Step 6: Final answer
    x = 108,878.07

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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.