Home / 102,690.75-154,053.64-45,785.31

Finding the Fourth Proportional to 102,690.75, 154,053.64 and 45,785.31

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Solution

The fourth proportional to 102,690.75, 154,053.64 and 45,785.31 is: 68,685.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,690.75 : 154,053.64 = 45,785.31 : x
  2. Step 2: Convert to fraction form
    102,690.75/154,053.64 = 45,785.31/x
  3. Step 3: Cross multiply
    102,690.75x = 154,053.64 × 45,785.31
  4. Step 4: Simplify right side
    102,690.75x = 7,053,393,664.03
  5. Step 5: Solve for x
    x = 7,053,393,664.03/102,690.75
  6. Step 6: Final answer
    x = 68,685.77

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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.