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Finding the Fourth Proportional to 136,015.98, 203,639.01 and 103,958.31

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Solution

The fourth proportional to 136,015.98, 203,639.01 and 103,958.31 is: 155,643.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,015.98 : 203,639.01 = 103,958.31 : x
  2. Step 2: Convert to fraction form
    136,015.98/203,639.01 = 103,958.31/x
  3. Step 3: Cross multiply
    136,015.98x = 203,639.01 × 103,958.31
  4. Step 4: Simplify right side
    136,015.98x = 21,169,968,093.32
  5. Step 5: Solve for x
    x = 21,169,968,093.32/136,015.98
  6. Step 6: Final answer
    x = 155,643.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.