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Finding the Fourth Proportional to 113,871.36, 170,813.24 and 47,318.20

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Solution

The fourth proportional to 113,871.36, 170,813.24 and 47,318.20 is: 70,979.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,871.36 : 170,813.24 = 47,318.20 : x
  2. Step 2: Convert to fraction form
    113,871.36/170,813.24 = 47,318.20/x
  3. Step 3: Cross multiply
    113,871.36x = 170,813.24 × 47,318.20
  4. Step 4: Simplify right side
    113,871.36x = 8,082,575,052.97
  5. Step 5: Solve for x
    x = 8,082,575,052.97/113,871.36
  6. Step 6: Final answer
    x = 70,979.88

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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.