Home / 205,939.47-307,656.86-133,300.66

Finding the Fourth Proportional to 205,939.47, 307,656.86 and 133,300.66

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Solution

The fourth proportional to 205,939.47, 307,656.86 and 133,300.66 is: 199,140.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,939.47 : 307,656.86 = 133,300.66 : x
  2. Step 2: Convert to fraction form
    205,939.47/307,656.86 = 133,300.66/x
  3. Step 3: Cross multiply
    205,939.47x = 307,656.86 × 133,300.66
  4. Step 4: Simplify right side
    205,939.47x = 41,010,862,491.53
  5. Step 5: Solve for x
    x = 41,010,862,491.53/205,939.47
  6. Step 6: Final answer
    x = 199,140.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.