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Finding the Fourth Proportional to 100,994.40, 139,460.40 and 63,333.60

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Solution

The fourth proportional to 100,994.40, 139,460.40 and 63,333.60 is: 87,455.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,994.40 : 139,460.40 = 63,333.60 : x
  2. Step 2: Convert to fraction form
    100,994.40/139,460.40 = 63,333.60/x
  3. Step 3: Cross multiply
    100,994.40x = 139,460.40 × 63,333.60
  4. Step 4: Simplify right side
    100,994.40x = 8,832,529,189.44
  5. Step 5: Solve for x
    x = 8,832,529,189.44/100,994.40
  6. Step 6: Final answer
    x = 87,455.63

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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.