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Finding the Fourth Proportional to 103,944, 143,443.12 and 58,005.60

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Solution

The fourth proportional to 103,944, 143,443.12 and 58,005.60 is: 80,047.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,944 : 143,443.12 = 58,005.60 : x
  2. Step 2: Convert to fraction form
    103,944/143,443.12 = 58,005.60/x
  3. Step 3: Cross multiply
    103,944x = 143,443.12 × 58,005.60
  4. Step 4: Simplify right side
    103,944x = 8,320,504,241.47
  5. Step 5: Solve for x
    x = 8,320,504,241.47/103,944
  6. Step 6: Final answer
    x = 80,047.95

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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.