Home / 217,848.60-300,542.90-137,133.72

Finding the Fourth Proportional to 217,848.60, 300,542.90 and 137,133.72

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Solution

The fourth proportional to 217,848.60, 300,542.90 and 137,133.72 is: 189,189.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,848.60 : 300,542.90 = 137,133.72 : x
  2. Step 2: Convert to fraction form
    217,848.60/300,542.90 = 137,133.72/x
  3. Step 3: Cross multiply
    217,848.60x = 300,542.90 × 137,133.72
  4. Step 4: Simplify right side
    217,848.60x = 41,214,565,896.59
  5. Step 5: Solve for x
    x = 41,214,565,896.59/217,848.60
  6. Step 6: Final answer
    x = 189,189.03

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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.