Home / 205,719.40-308,384.70-121,544.20

Finding the Fourth Proportional to 205,719.40, 308,384.70 and 121,544.20

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Solution

The fourth proportional to 205,719.40, 308,384.70 and 121,544.20 is: 182,201.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,719.40 : 308,384.70 = 121,544.20 : x
  2. Step 2: Convert to fraction form
    205,719.40/308,384.70 = 121,544.20/x
  3. Step 3: Cross multiply
    205,719.40x = 308,384.70 × 121,544.20
  4. Step 4: Simplify right side
    205,719.40x = 37,482,371,653.74
  5. Step 5: Solve for x
    x = 37,482,371,653.74/205,719.40
  6. Step 6: Final answer
    x = 182,201.44

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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.