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Finding the Fourth Proportional to 146,103.40, 218,717.70 and 86,908.60

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Solution

The fourth proportional to 146,103.40, 218,717.70 and 86,908.60 is: 130,102.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,103.40 : 218,717.70 = 86,908.60 : x
  2. Step 2: Convert to fraction form
    146,103.40/218,717.70 = 86,908.60/x
  3. Step 3: Cross multiply
    146,103.40x = 218,717.70 × 86,908.60
  4. Step 4: Simplify right side
    146,103.40x = 19,008,449,102.22
  5. Step 5: Solve for x
    x = 19,008,449,102.22/146,103.40
  6. Step 6: Final answer
    x = 130,102.72

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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.