Home / 205,983.60-308,975.40-65,746.80

Finding the Fourth Proportional to 205,983.60, 308,975.40 and 65,746.80

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Solution

The fourth proportional to 205,983.60, 308,975.40 and 65,746.80 is: 98,620.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,983.60 : 308,975.40 = 65,746.80 : x
  2. Step 2: Convert to fraction form
    205,983.60/308,975.40 = 65,746.80/x
  3. Step 3: Cross multiply
    205,983.60x = 308,975.40 × 65,746.80
  4. Step 4: Simplify right side
    205,983.60x = 20,314,143,828.72
  5. Step 5: Solve for x
    x = 20,314,143,828.72/205,983.60
  6. Step 6: Final answer
    x = 98,620.20

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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.