Home / 100,370.96-150,574.90-81,815.64

Finding the Fourth Proportional to 100,370.96, 150,574.90 and 81,815.64

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Solution

The fourth proportional to 100,370.96, 150,574.90 and 81,815.64 is: 122,738.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,370.96 : 150,574.90 = 81,815.64 : x
  2. Step 2: Convert to fraction form
    100,370.96/150,574.90 = 81,815.64/x
  3. Step 3: Cross multiply
    100,370.96x = 150,574.90 × 81,815.64
  4. Step 4: Simplify right side
    100,370.96x = 12,319,381,195.65
  5. Step 5: Solve for x
    x = 12,319,381,195.65/100,370.96
  6. Step 6: Final answer
    x = 122,738.50

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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.