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Finding the Fourth Proportional to 103,357.10, 154,999.20 and 36,799.40

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Solution

The fourth proportional to 103,357.10, 154,999.20 and 36,799.40 is: 55,186.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,357.10 : 154,999.20 = 36,799.40 : x
  2. Step 2: Convert to fraction form
    103,357.10/154,999.20 = 36,799.40/x
  3. Step 3: Cross multiply
    103,357.10x = 154,999.20 × 36,799.40
  4. Step 4: Simplify right side
    103,357.10x = 5,703,877,560.48
  5. Step 5: Solve for x
    x = 5,703,877,560.48/103,357.10
  6. Step 6: Final answer
    x = 55,186.12

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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.