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Finding the Fourth Proportional to 132,055.80, 198,081.90 and 43,312.20

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Solution

The fourth proportional to 132,055.80, 198,081.90 and 43,312.20 is: 64,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,055.80 : 198,081.90 = 43,312.20 : x
  2. Step 2: Convert to fraction form
    132,055.80/198,081.90 = 43,312.20/x
  3. Step 3: Cross multiply
    132,055.80x = 198,081.90 × 43,312.20
  4. Step 4: Simplify right side
    132,055.80x = 8,579,362,869.18
  5. Step 5: Solve for x
    x = 8,579,362,869.18/132,055.80
  6. Step 6: Final answer
    x = 64,967.71

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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.