Home / 122,198.95-183,462.45-78,021.55

Finding the Fourth Proportional to 122,198.95, 183,462.45 and 78,021.55

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Solution

The fourth proportional to 122,198.95, 183,462.45 and 78,021.55 is: 117,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,198.95 : 183,462.45 = 78,021.55 : x
  2. Step 2: Convert to fraction form
    122,198.95/183,462.45 = 78,021.55/x
  3. Step 3: Cross multiply
    122,198.95x = 183,462.45 × 78,021.55
  4. Step 4: Simplify right side
    122,198.95x = 14,314,024,715.80
  5. Step 5: Solve for x
    x = 14,314,024,715.80/122,198.95
  6. Step 6: Final answer
    x = 117,137.05

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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.