Home / 102,783.12-154,172.44-47,379.12

Finding the Fourth Proportional to 102,783.12, 154,172.44 and 47,379.12

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Solution

The fourth proportional to 102,783.12, 154,172.44 and 47,379.12 is: 71,067.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,783.12 : 154,172.44 = 47,379.12 : x
  2. Step 2: Convert to fraction form
    102,783.12/154,172.44 = 47,379.12/x
  3. Step 3: Cross multiply
    102,783.12x = 154,172.44 × 47,379.12
  4. Step 4: Simplify right side
    102,783.12x = 7,304,554,535.45
  5. Step 5: Solve for x
    x = 7,304,554,535.45/102,783.12
  6. Step 6: Final answer
    x = 71,067.65

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1.5x scale

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.