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Finding the Fourth Proportional to 103,220.40, 154,833.84 and 36,659.46

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Solution

The fourth proportional to 103,220.40, 154,833.84 and 36,659.46 is: 54,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,220.40 : 154,833.84 = 36,659.46 : x
  2. Step 2: Convert to fraction form
    103,220.40/154,833.84 = 36,659.46/x
  3. Step 3: Cross multiply
    103,220.40x = 154,833.84 × 36,659.46
  4. Step 4: Simplify right side
    103,220.40x = 5,676,124,964.13
  5. Step 5: Solve for x
    x = 5,676,124,964.13/103,220.40
  6. Step 6: Final answer
    x = 54,990.34

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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.