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Finding the Fourth Proportional to 159,138.71, 238,710.81 and 53,960.39

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Solution

The fourth proportional to 159,138.71, 238,710.81 and 53,960.39 is: 80,941.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,138.71 : 238,710.81 = 53,960.39 : x
  2. Step 2: Convert to fraction form
    159,138.71/238,710.81 = 53,960.39/x
  3. Step 3: Cross multiply
    159,138.71x = 238,710.81 × 53,960.39
  4. Step 4: Simplify right side
    159,138.71x = 12,880,928,404.82
  5. Step 5: Solve for x
    x = 12,880,928,404.82/159,138.71
  6. Step 6: Final answer
    x = 80,941.52

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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.