Home / 209,953.80-314,930.70-115,147.35

Finding the Fourth Proportional to 209,953.80, 314,930.70 and 115,147.35

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Solution

The fourth proportional to 209,953.80, 314,930.70 and 115,147.35 is: 172,721.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953.80 : 314,930.70 = 115,147.35 : x
  2. Step 2: Convert to fraction form
    209,953.80/314,930.70 = 115,147.35/x
  3. Step 3: Cross multiply
    209,953.80x = 314,930.70 × 115,147.35
  4. Step 4: Simplify right side
    209,953.80x = 36,263,435,538.65
  5. Step 5: Solve for x
    x = 36,263,435,538.65/209,953.80
  6. Step 6: Final answer
    x = 172,721.03

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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.