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Finding the Fourth Proportional to 210,104.28, 315,220.62 and 125,958.12

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Solution

The fourth proportional to 210,104.28, 315,220.62 and 125,958.12 is: 188,975.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,104.28 : 315,220.62 = 125,958.12 : x
  2. Step 2: Convert to fraction form
    210,104.28/315,220.62 = 125,958.12/x
  3. Step 3: Cross multiply
    210,104.28x = 315,220.62 × 125,958.12
  4. Step 4: Simplify right side
    210,104.28x = 39,704,596,680.43
  5. Step 5: Solve for x
    x = 39,704,596,680.43/210,104.28
  6. Step 6: Final answer
    x = 188,975.67

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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.