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Finding the Fourth Proportional to 131,080, 196,620 and 43,528

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Solution

The fourth proportional to 131,080, 196,620 and 43,528 is: 65,292

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,080 : 196,620 = 43,528 : x
  2. Step 2: Convert to fraction form
    131,080/196,620 = 43,528/x
  3. Step 3: Cross multiply
    131,080x = 196,620 × 43,528
  4. Step 4: Simplify right side
    131,080x = 8,558,475,360
  5. Step 5: Solve for x
    x = 8,558,475,360/131,080
  6. Step 6: Final answer
    x = 65,292

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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.