Home / 205,976.46-309,014.01-85,966.68

Finding the Fourth Proportional to 205,976.46, 309,014.01 and 85,966.68

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Solution

The fourth proportional to 205,976.46, 309,014.01 and 85,966.68 is: 128,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,976.46 : 309,014.01 = 85,966.68 : x
  2. Step 2: Convert to fraction form
    205,976.46/309,014.01 = 85,966.68/x
  3. Step 3: Cross multiply
    205,976.46x = 309,014.01 × 85,966.68
  4. Step 4: Simplify right side
    205,976.46x = 26,564,908,513.19
  5. Step 5: Solve for x
    x = 26,564,908,513.19/205,976.46
  6. Step 6: Final answer
    x = 128,970.60

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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.