Home / 131,844.10-197,678.79-72,708.10

Finding the Fourth Proportional to 131,844.10, 197,678.79 and 72,708.10

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Solution

The fourth proportional to 131,844.10, 197,678.79 and 72,708.10 is: 109,013.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,844.10 : 197,678.79 = 72,708.10 : x
  2. Step 2: Convert to fraction form
    131,844.10/197,678.79 = 72,708.10/x
  3. Step 3: Cross multiply
    131,844.10x = 197,678.79 × 72,708.10
  4. Step 4: Simplify right side
    131,844.10x = 14,372,849,231.20
  5. Step 5: Solve for x
    x = 14,372,849,231.20/131,844.10
  6. Step 6: Final answer
    x = 109,013.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.