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Finding the Fourth Proportional to 104,884.50, 144,745.04 and 57,140.47

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Solution

The fourth proportional to 104,884.50, 144,745.04 and 57,140.47 is: 78,856.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,884.50 : 144,745.04 = 57,140.47 : x
  2. Step 2: Convert to fraction form
    104,884.50/144,745.04 = 57,140.47/x
  3. Step 3: Cross multiply
    104,884.50x = 144,745.04 × 57,140.47
  4. Step 4: Simplify right side
    104,884.50x = 8,270,799,939.55
  5. Step 5: Solve for x
    x = 8,270,799,939.55/104,884.50
  6. Step 6: Final answer
    x = 78,856.26

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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.