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Finding the Fourth Proportional to 159,572.40, 239,429.10 and 84,674.28

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Solution

The fourth proportional to 159,572.40, 239,429.10 and 84,674.28 is: 127,048.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,572.40 : 239,429.10 = 84,674.28 : x
  2. Step 2: Convert to fraction form
    159,572.40/239,429.10 = 84,674.28/x
  3. Step 3: Cross multiply
    159,572.40x = 239,429.10 × 84,674.28
  4. Step 4: Simplify right side
    159,572.40x = 20,273,486,653.55
  5. Step 5: Solve for x
    x = 20,273,486,653.55/159,572.40
  6. Step 6: Final answer
    x = 127,048.83

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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.