Home / 189,390.44-283,815-139,075.82

Finding the Fourth Proportional to 189,390.44, 283,815 and 139,075.82

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Solution

The fourth proportional to 189,390.44, 283,815 and 139,075.82 is: 208,414.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,390.44 : 283,815 = 139,075.82 : x
  2. Step 2: Convert to fraction form
    189,390.44/283,815 = 139,075.82/x
  3. Step 3: Cross multiply
    189,390.44x = 283,815 × 139,075.82
  4. Step 4: Simplify right side
    189,390.44x = 39,471,803,853.30
  5. Step 5: Solve for x
    x = 39,471,803,853.30/189,390.44
  6. Step 6: Final answer
    x = 208,414.98

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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.