Home / 102,730.36-154,105.80-27,851.72

Finding the Fourth Proportional to 102,730.36, 154,105.80 and 27,851.72

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Solution

The fourth proportional to 102,730.36, 154,105.80 and 27,851.72 is: 41,780.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,730.36 : 154,105.80 = 27,851.72 : x
  2. Step 2: Convert to fraction form
    102,730.36/154,105.80 = 27,851.72/x
  3. Step 3: Cross multiply
    102,730.36x = 154,105.80 × 27,851.72
  4. Step 4: Simplify right side
    102,730.36x = 4,292,111,591.98
  5. Step 5: Solve for x
    x = 4,292,111,591.98/102,730.36
  6. Step 6: Final answer
    x = 41,780.36

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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.