Home / 205,423.25-308,160.80-70,513.61

Finding the Fourth Proportional to 205,423.25, 308,160.80 and 70,513.61

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Solution

The fourth proportional to 205,423.25, 308,160.80 and 70,513.61 is: 105,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,423.25 : 308,160.80 = 70,513.61 : x
  2. Step 2: Convert to fraction form
    205,423.25/308,160.80 = 70,513.61/x
  3. Step 3: Cross multiply
    205,423.25x = 308,160.80 × 70,513.61
  4. Step 4: Simplify right side
    205,423.25x = 21,729,530,115.92
  5. Step 5: Solve for x
    x = 21,729,530,115.92/205,423.25
  6. Step 6: Final answer
    x = 105,779.31

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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.