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Finding the Fourth Proportional to 141,811, 212,604.10 and 70,694.88

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Solution

The fourth proportional to 141,811, 212,604.10 and 70,694.88 is: 105,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,811 : 212,604.10 = 70,694.88 : x
  2. Step 2: Convert to fraction form
    141,811/212,604.10 = 70,694.88/x
  3. Step 3: Cross multiply
    141,811x = 212,604.10 × 70,694.88
  4. Step 4: Simplify right side
    141,811x = 15,030,021,337.01
  5. Step 5: Solve for x
    x = 15,030,021,337.01/141,811
  6. Step 6: Final answer
    x = 105,986.29

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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.