Home / 102,731.59-154,146.25-71,190.19

Finding the Fourth Proportional to 102,731.59, 154,146.25 and 71,190.19

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Solution

The fourth proportional to 102,731.59, 154,146.25 and 71,190.19 is: 106,819.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,731.59 : 154,146.25 = 71,190.19 : x
  2. Step 2: Convert to fraction form
    102,731.59/154,146.25 = 71,190.19/x
  3. Step 3: Cross multiply
    102,731.59x = 154,146.25 × 71,190.19
  4. Step 4: Simplify right side
    102,731.59x = 10,973,700,054.56
  5. Step 5: Solve for x
    x = 10,973,700,054.56/102,731.59
  6. Step 6: Final answer
    x = 106,819.14

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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.