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Finding the Fourth Proportional to 159,890.60, 239,771.10 and 54,655.40

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Solution

The fourth proportional to 159,890.60, 239,771.10 and 54,655.40 is: 81,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,890.60 : 239,771.10 = 54,655.40 : x
  2. Step 2: Convert to fraction form
    159,890.60/239,771.10 = 54,655.40/x
  3. Step 3: Cross multiply
    159,890.60x = 239,771.10 × 54,655.40
  4. Step 4: Simplify right side
    159,890.60x = 13,104,785,378.94
  5. Step 5: Solve for x
    x = 13,104,785,378.94/159,890.60
  6. Step 6: Final answer
    x = 81,960.95

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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.