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Finding the Fourth Proportional to 131,768.63, 197,689.89 and 52,938.21

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Solution

The fourth proportional to 131,768.63, 197,689.89 and 52,938.21 is: 79,422.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,768.63 : 197,689.89 = 52,938.21 : x
  2. Step 2: Convert to fraction form
    131,768.63/197,689.89 = 52,938.21/x
  3. Step 3: Cross multiply
    131,768.63x = 197,689.89 × 52,938.21
  4. Step 4: Simplify right side
    131,768.63x = 10,465,348,911.70
  5. Step 5: Solve for x
    x = 10,465,348,911.70/131,768.63
  6. Step 6: Final answer
    x = 79,422.16

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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.