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Finding the Fourth Proportional to 70,785.65, 106,178.48 and 18,195.18

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Solution

The fourth proportional to 70,785.65, 106,178.48 and 18,195.18 is: 27,292.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,785.65 : 106,178.48 = 18,195.18 : x
  2. Step 2: Convert to fraction form
    70,785.65/106,178.48 = 18,195.18/x
  3. Step 3: Cross multiply
    70,785.65x = 106,178.48 × 18,195.18
  4. Step 4: Simplify right side
    70,785.65x = 1,931,936,464.75
  5. Step 5: Solve for x
    x = 1,931,936,464.75/70,785.65
  6. Step 6: Final answer
    x = 27,292.77

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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.