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Finding the Fourth Proportional to 141,911.92, 212,853.30 and 47,148.40

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Solution

The fourth proportional to 141,911.92, 212,853.30 and 47,148.40 is: 70,717.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,911.92 : 212,853.30 = 47,148.40 : x
  2. Step 2: Convert to fraction form
    141,911.92/212,853.30 = 47,148.40/x
  3. Step 3: Cross multiply
    141,911.92x = 212,853.30 × 47,148.40
  4. Step 4: Simplify right side
    141,911.92x = 10,035,692,529.72
  5. Step 5: Solve for x
    x = 10,035,692,529.72/141,911.92
  6. Step 6: Final answer
    x = 70,717.76

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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.