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Finding the Fourth Proportional to 121,886.68, 182,807.60 and 55,310.80

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Solution

The fourth proportional to 121,886.68, 182,807.60 and 55,310.80 is: 82,956.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,886.68 : 182,807.60 = 55,310.80 : x
  2. Step 2: Convert to fraction form
    121,886.68/182,807.60 = 55,310.80/x
  3. Step 3: Cross multiply
    121,886.68x = 182,807.60 × 55,310.80
  4. Step 4: Simplify right side
    121,886.68x = 10,111,234,602.08
  5. Step 5: Solve for x
    x = 10,111,234,602.08/121,886.68
  6. Step 6: Final answer
    x = 82,956.03

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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.