Home / 189,942,141.52-261,912,006.21-123,739,871.95

Finding the Fourth Proportional to 189,942,141.52, 261,912,006.21 and 123,739,871.95

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Solution

The fourth proportional to 189,942,141.52, 261,912,006.21 and 123,739,871.95 is: 170,625,422.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,942,141.52 : 261,912,006.21 = 123,739,871.95 : x
  2. Step 2: Convert to fraction form
    189,942,141.52/261,912,006.21 = 123,739,871.95/x
  3. Step 3: Cross multiply
    189,942,141.52x = 261,912,006.21 × 123,739,871.95
  4. Step 4: Simplify right side
    189,942,141.52x = 32,408,958,110,593,008
  5. Step 5: Solve for x
    x = 32,408,958,110,593,008/189,942,141.52
  6. Step 6: Final answer
    x = 170,625,422.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.