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Finding the Fourth Proportional to 103,768.70, 143,200.96 and 60,740.37

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Solution

The fourth proportional to 103,768.70, 143,200.96 and 60,740.37 is: 83,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,768.70 : 143,200.96 = 60,740.37 : x
  2. Step 2: Convert to fraction form
    103,768.70/143,200.96 = 60,740.37/x
  3. Step 3: Cross multiply
    103,768.70x = 143,200.96 × 60,740.37
  4. Step 4: Simplify right side
    103,768.70x = 8,698,079,142.90
  5. Step 5: Solve for x
    x = 8,698,079,142.90/103,768.70
  6. Step 6: Final answer
    x = 83,821.80

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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.