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Finding the Fourth Proportional to 159,574.28, 239,157.90 and 84,730.28

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Solution

The fourth proportional to 159,574.28, 239,157.90 and 84,730.28 is: 126,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,574.28 : 239,157.90 = 84,730.28 : x
  2. Step 2: Convert to fraction form
    159,574.28/239,157.90 = 84,730.28/x
  3. Step 3: Cross multiply
    159,574.28x = 239,157.90 × 84,730.28
  4. Step 4: Simplify right side
    159,574.28x = 20,263,914,635.42
  5. Step 5: Solve for x
    x = 20,263,914,635.42/159,574.28
  6. Step 6: Final answer
    x = 126,987.35

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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.