Home / 122,107.20-182,804.40-87,115.20

Finding the Fourth Proportional to 122,107.20, 182,804.40 and 87,115.20

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Solution

The fourth proportional to 122,107.20, 182,804.40 and 87,115.20 is: 130,418.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,107.20 : 182,804.40 = 87,115.20 : x
  2. Step 2: Convert to fraction form
    122,107.20/182,804.40 = 87,115.20/x
  3. Step 3: Cross multiply
    122,107.20x = 182,804.40 × 87,115.20
  4. Step 4: Simplify right side
    122,107.20x = 15,925,041,866.88
  5. Step 5: Solve for x
    x = 15,925,041,866.88/122,107.20
  6. Step 6: Final answer
    x = 130,418.53

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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.