Home / 204,557.40-306,690.30-78,148.80

Finding the Fourth Proportional to 204,557.40, 306,690.30 and 78,148.80

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Solution

The fourth proportional to 204,557.40, 306,690.30 and 78,148.80 is: 117,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,557.40 : 306,690.30 = 78,148.80 : x
  2. Step 2: Convert to fraction form
    204,557.40/306,690.30 = 78,148.80/x
  3. Step 3: Cross multiply
    204,557.40x = 306,690.30 × 78,148.80
  4. Step 4: Simplify right side
    204,557.40x = 23,967,478,916.64
  5. Step 5: Solve for x
    x = 23,967,478,916.64/204,557.40
  6. Step 6: Final answer
    x = 117,167.50

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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.