Home / 102,857.42-154,276.14-69,789.98

Finding the Fourth Proportional to 102,857.42, 154,276.14 and 69,789.98

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Solution

The fourth proportional to 102,857.42, 154,276.14 and 69,789.98 is: 104,678.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,857.42 : 154,276.14 = 69,789.98 : x
  2. Step 2: Convert to fraction form
    102,857.42/154,276.14 = 69,789.98/x
  3. Step 3: Cross multiply
    102,857.42x = 154,276.14 × 69,789.98
  4. Step 4: Simplify right side
    102,857.42x = 10,766,928,725.08
  5. Step 5: Solve for x
    x = 10,766,928,725.08/102,857.42
  6. Step 6: Final answer
    x = 104,678.19

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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.