Home / 102,785.12-154,175.44-47,381.12

Finding the Fourth Proportional to 102,785.12, 154,175.44 and 47,381.12

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Solution

The fourth proportional to 102,785.12, 154,175.44 and 47,381.12 is: 71,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,785.12 : 154,175.44 = 47,381.12 : x
  2. Step 2: Convert to fraction form
    102,785.12/154,175.44 = 47,381.12/x
  3. Step 3: Cross multiply
    102,785.12x = 154,175.44 × 47,381.12
  4. Step 4: Simplify right side
    102,785.12x = 7,305,005,023.69
  5. Step 5: Solve for x
    x = 7,305,005,023.69/102,785.12
  6. Step 6: Final answer
    x = 71,070.65

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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.