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Finding the Fourth Proportional to 108,611.24, 149,956.74 and 67,837.64

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Solution

The fourth proportional to 108,611.24, 149,956.74 and 67,837.64 is: 93,661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,611.24 : 149,956.74 = 67,837.64 : x
  2. Step 2: Convert to fraction form
    108,611.24/149,956.74 = 67,837.64/x
  3. Step 3: Cross multiply
    108,611.24x = 149,956.74 × 67,837.64
  4. Step 4: Simplify right side
    108,611.24x = 10,172,711,343.69
  5. Step 5: Solve for x
    x = 10,172,711,343.69/108,611.24
  6. Step 6: Final answer
    x = 93,661.68

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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.