Home / 106,015.20-159,022.80-72,837.60

Finding the Fourth Proportional to 106,015.20, 159,022.80 and 72,837.60

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Solution

The fourth proportional to 106,015.20, 159,022.80 and 72,837.60 is: 109,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,015.20 : 159,022.80 = 72,837.60 : x
  2. Step 2: Convert to fraction form
    106,015.20/159,022.80 = 72,837.60/x
  3. Step 3: Cross multiply
    106,015.20x = 159,022.80 × 72,837.60
  4. Step 4: Simplify right side
    106,015.20x = 11,582,839,097.28
  5. Step 5: Solve for x
    x = 11,582,839,097.28/106,015.20
  6. Step 6: Final answer
    x = 109,256.40

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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.