Home / 190,855.40-286,392.45-72,611.60

Finding the Fourth Proportional to 190,855.40, 286,392.45 and 72,611.60

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Solution

The fourth proportional to 190,855.40, 286,392.45 and 72,611.60 is: 108,959.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,855.40 : 286,392.45 = 72,611.60 : x
  2. Step 2: Convert to fraction form
    190,855.40/286,392.45 = 72,611.60/x
  3. Step 3: Cross multiply
    190,855.40x = 286,392.45 × 72,611.60
  4. Step 4: Simplify right side
    190,855.40x = 20,795,414,022.42
  5. Step 5: Solve for x
    x = 20,795,414,022.42/190,855.40
  6. Step 6: Final answer
    x = 108,959.00

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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.