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Finding the Fourth Proportional to 199,124.60, 299,147.70 and 136,916.60

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Solution

The fourth proportional to 199,124.60, 299,147.70 and 136,916.60 is: 205,691.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,124.60 : 299,147.70 = 136,916.60 : x
  2. Step 2: Convert to fraction form
    199,124.60/299,147.70 = 136,916.60/x
  3. Step 3: Cross multiply
    199,124.60x = 299,147.70 × 136,916.60
  4. Step 4: Simplify right side
    199,124.60x = 40,958,285,981.82
  5. Step 5: Solve for x
    x = 40,958,285,981.82/199,124.60
  6. Step 6: Final answer
    x = 205,691.74

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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.