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Finding the Fourth Proportional to 147,847.78, 204,030 and 79,864.75

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Solution

The fourth proportional to 147,847.78, 204,030 and 79,864.75 is: 110,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,847.78 : 204,030 = 79,864.75 : x
  2. Step 2: Convert to fraction form
    147,847.78/204,030 = 79,864.75/x
  3. Step 3: Cross multiply
    147,847.78x = 204,030 × 79,864.75
  4. Step 4: Simplify right side
    147,847.78x = 16,294,804,432.43
  5. Step 5: Solve for x
    x = 16,294,804,432.43/147,847.78
  6. Step 6: Final answer
    x = 110,213.39

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1.5x scale

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.