Home / 143,439.34-197,942.78-83,001.60

Finding the Fourth Proportional to 143,439.34, 197,942.78 and 83,001.60

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Solution

The fourth proportional to 143,439.34, 197,942.78 and 83,001.60 is: 114,540.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,439.34 : 197,942.78 = 83,001.60 : x
  2. Step 2: Convert to fraction form
    143,439.34/197,942.78 = 83,001.60/x
  3. Step 3: Cross multiply
    143,439.34x = 197,942.78 × 83,001.60
  4. Step 4: Simplify right side
    143,439.34x = 16,429,567,448.45
  5. Step 5: Solve for x
    x = 16,429,567,448.45/143,439.34
  6. Step 6: Final answer
    x = 114,540.18

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1.5x scale

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.