Home / 213,172.40-294,187.42-122,557.68

Finding the Fourth Proportional to 213,172.40, 294,187.42 and 122,557.68

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Solution

The fourth proportional to 213,172.40, 294,187.42 and 122,557.68 is: 169,135.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,172.40 : 294,187.42 = 122,557.68 : x
  2. Step 2: Convert to fraction form
    213,172.40/294,187.42 = 122,557.68/x
  3. Step 3: Cross multiply
    213,172.40x = 294,187.42 × 122,557.68
  4. Step 4: Simplify right side
    213,172.40x = 36,054,927,680.39
  5. Step 5: Solve for x
    x = 36,054,927,680.39/213,172.40
  6. Step 6: Final answer
    x = 169,135.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.