Home / 132,059.20-197,985.12-90,379.84

Finding the Fourth Proportional to 132,059.20, 197,985.12 and 90,379.84

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Solution

The fourth proportional to 132,059.20, 197,985.12 and 90,379.84 is: 135,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,059.20 : 197,985.12 = 90,379.84 : x
  2. Step 2: Convert to fraction form
    132,059.20/197,985.12 = 90,379.84/x
  3. Step 3: Cross multiply
    132,059.20x = 197,985.12 × 90,379.84
  4. Step 4: Simplify right side
    132,059.20x = 17,893,863,467.98
  5. Step 5: Solve for x
    x = 17,893,863,467.98/132,059.20
  6. Step 6: Final answer
    x = 135,498.80

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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.