Home / 154,936.80-213,815.70-91,309.68

Finding the Fourth Proportional to 154,936.80, 213,815.70 and 91,309.68

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Solution

The fourth proportional to 154,936.80, 213,815.70 and 91,309.68 is: 126,009.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,936.80 : 213,815.70 = 91,309.68 : x
  2. Step 2: Convert to fraction form
    154,936.80/213,815.70 = 91,309.68/x
  3. Step 3: Cross multiply
    154,936.80x = 213,815.70 × 91,309.68
  4. Step 4: Simplify right side
    154,936.80x = 19,523,443,145.98
  5. Step 5: Solve for x
    x = 19,523,443,145.98/154,936.80
  6. Step 6: Final answer
    x = 126,009.08

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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.