Home / 130,299.21-195,485.81-67,165.61

Finding the Fourth Proportional to 130,299.21, 195,485.81 and 67,165.61

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Solution

The fourth proportional to 130,299.21, 195,485.81 and 67,165.61 is: 100,767.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,299.21 : 195,485.81 = 67,165.61 : x
  2. Step 2: Convert to fraction form
    130,299.21/195,485.81 = 67,165.61/x
  3. Step 3: Cross multiply
    130,299.21x = 195,485.81 × 67,165.61
  4. Step 4: Simplify right side
    130,299.21x = 13,129,922,361.74
  5. Step 5: Solve for x
    x = 13,129,922,361.74/130,299.21
  6. Step 6: Final answer
    x = 100,767.47

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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.