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Finding the Fourth Proportional to 132,651.60, 183,014.28 and 81,611.88

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Solution

The fourth proportional to 132,651.60, 183,014.28 and 81,611.88 is: 112,596.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,651.60 : 183,014.28 = 81,611.88 : x
  2. Step 2: Convert to fraction form
    132,651.60/183,014.28 = 81,611.88/x
  3. Step 3: Cross multiply
    132,651.60x = 183,014.28 × 81,611.88
  4. Step 4: Simplify right side
    132,651.60x = 14,936,139,457.65
  5. Step 5: Solve for x
    x = 14,936,139,457.65/132,651.60
  6. Step 6: Final answer
    x = 112,596.75

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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.