Home / 209,172.67-312,983.83-124,978.65

Finding the Fourth Proportional to 209,172.67, 312,983.83 and 124,978.65

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Solution

The fourth proportional to 209,172.67, 312,983.83 and 124,978.65 is: 187,004.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,172.67 : 312,983.83 = 124,978.65 : x
  2. Step 2: Convert to fraction form
    209,172.67/312,983.83 = 124,978.65/x
  3. Step 3: Cross multiply
    209,172.67x = 312,983.83 × 124,978.65
  4. Step 4: Simplify right side
    209,172.67x = 39,116,296,545.23
  5. Step 5: Solve for x
    x = 39,116,296,545.23/209,172.67
  6. Step 6: Final answer
    x = 187,004.82

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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.