Home / 205,890.65-308,889.21-120,573.55

Finding the Fourth Proportional to 205,890.65, 308,889.21 and 120,573.55

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Solution

The fourth proportional to 205,890.65, 308,889.21 and 120,573.55 is: 180,891.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,890.65 : 308,889.21 = 120,573.55 : x
  2. Step 2: Convert to fraction form
    205,890.65/308,889.21 = 120,573.55/x
  3. Step 3: Cross multiply
    205,890.65x = 308,889.21 × 120,573.55
  4. Step 4: Simplify right side
    205,890.65x = 37,243,868,606.40
  5. Step 5: Solve for x
    x = 37,243,868,606.40/205,890.65
  6. Step 6: Final answer
    x = 180,891.50

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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.