Home / 197,778.72-272,935.20-107,134.40

Finding the Fourth Proportional to 197,778.72, 272,935.20 and 107,134.40

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Solution

The fourth proportional to 197,778.72, 272,935.20 and 107,134.40 is: 147,845.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,778.72 : 272,935.20 = 107,134.40 : x
  2. Step 2: Convert to fraction form
    197,778.72/272,935.20 = 107,134.40/x
  3. Step 3: Cross multiply
    197,778.72x = 272,935.20 × 107,134.40
  4. Step 4: Simplify right side
    197,778.72x = 29,240,748,890.88
  5. Step 5: Solve for x
    x = 29,240,748,890.88/197,778.72
  6. Step 6: Final answer
    x = 147,845.78

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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.