Home / 205,974.46-309,011.01-85,964.68

Finding the Fourth Proportional to 205,974.46, 309,011.01 and 85,964.68

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Solution

The fourth proportional to 205,974.46, 309,011.01 and 85,964.68 is: 128,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,974.46 : 309,011.01 = 85,964.68 : x
  2. Step 2: Convert to fraction form
    205,974.46/309,011.01 = 85,964.68/x
  3. Step 3: Cross multiply
    205,974.46x = 309,011.01 × 85,964.68
  4. Step 4: Simplify right side
    205,974.46x = 26,564,032,591.13
  5. Step 5: Solve for x
    x = 26,564,032,591.13/205,974.46
  6. Step 6: Final answer
    x = 128,967.60

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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.