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Finding the Fourth Proportional to 199,121.76, 297,980.78 and 124,276.95

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Solution

The fourth proportional to 199,121.76, 297,980.78 and 124,276.95 is: 185,977.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,121.76 : 297,980.78 = 124,276.95 : x
  2. Step 2: Convert to fraction form
    199,121.76/297,980.78 = 124,276.95/x
  3. Step 3: Cross multiply
    199,121.76x = 297,980.78 × 124,276.95
  4. Step 4: Simplify right side
    199,121.76x = 37,032,141,875.64
  5. Step 5: Solve for x
    x = 37,032,141,875.64/199,121.76
  6. Step 6: Final answer
    x = 185,977.37

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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.