Home / 189,942,140.52-261,912,004.83-123,739,870.95

Finding the Fourth Proportional to 189,942,140.52, 261,912,004.83 and 123,739,870.95

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Solution

The fourth proportional to 189,942,140.52, 261,912,004.83 and 123,739,870.95 is: 170,625,420.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,942,140.52 : 261,912,004.83 = 123,739,870.95 : x
  2. Step 2: Convert to fraction form
    189,942,140.52/261,912,004.83 = 123,739,870.95/x
  3. Step 3: Cross multiply
    189,942,140.52x = 261,912,004.83 × 123,739,870.95
  4. Step 4: Simplify right side
    189,942,140.52x = 32,408,957,677,919,980
  5. Step 5: Solve for x
    x = 32,408,957,677,919,980/189,942,140.52
  6. Step 6: Final answer
    x = 170,625,420.93

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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.