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Finding the Fourth Proportional to 98,322.76, 135,818.97 and 77,080.69

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Solution

The fourth proportional to 98,322.76, 135,818.97 and 77,080.69 is: 106,476.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,322.76 : 135,818.97 = 77,080.69 : x
  2. Step 2: Convert to fraction form
    98,322.76/135,818.97 = 77,080.69/x
  3. Step 3: Cross multiply
    98,322.76x = 135,818.97 × 77,080.69
  4. Step 4: Simplify right side
    98,322.76x = 10,469,019,576.26
  5. Step 5: Solve for x
    x = 10,469,019,576.26/98,322.76
  6. Step 6: Final answer
    x = 106,476.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.