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Finding the Fourth Proportional to 132,040.80, 197,888.40 and 53,090.40

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Solution

The fourth proportional to 132,040.80, 197,888.40 and 53,090.40 is: 79,566.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,040.80 : 197,888.40 = 53,090.40 : x
  2. Step 2: Convert to fraction form
    132,040.80/197,888.40 = 53,090.40/x
  3. Step 3: Cross multiply
    132,040.80x = 197,888.40 × 53,090.40
  4. Step 4: Simplify right side
    132,040.80x = 10,505,974,311.36
  5. Step 5: Solve for x
    x = 10,505,974,311.36/132,040.80
  6. Step 6: Final answer
    x = 79,566.12

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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.