Home / 100,012.14-138,015.42-56,994.19

Finding the Fourth Proportional to 100,012.14, 138,015.42 and 56,994.19

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Solution

The fourth proportional to 100,012.14, 138,015.42 and 56,994.19 is: 78,651.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,012.14 : 138,015.42 = 56,994.19 : x
  2. Step 2: Convert to fraction form
    100,012.14/138,015.42 = 56,994.19/x
  3. Step 3: Cross multiply
    100,012.14x = 138,015.42 × 56,994.19
  4. Step 4: Simplify right side
    100,012.14x = 7,866,076,768.98
  5. Step 5: Solve for x
    x = 7,866,076,768.98/100,012.14
  6. Step 6: Final answer
    x = 78,651.22

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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.