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Finding the Fourth Proportional to 143,286.30, 214,929.45 and 125,790.30

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Solution

The fourth proportional to 143,286.30, 214,929.45 and 125,790.30 is: 188,685.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,286.30 : 214,929.45 = 125,790.30 : x
  2. Step 2: Convert to fraction form
    143,286.30/214,929.45 = 125,790.30/x
  3. Step 3: Cross multiply
    143,286.30x = 214,929.45 × 125,790.30
  4. Step 4: Simplify right side
    143,286.30x = 27,036,039,994.34
  5. Step 5: Solve for x
    x = 27,036,039,994.34/143,286.30
  6. Step 6: Final answer
    x = 188,685.45

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1.5x scale

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.