Home / 190,946.20-286,311.30-72,621.40

Finding the Fourth Proportional to 190,946.20, 286,311.30 and 72,621.40

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Solution

The fourth proportional to 190,946.20, 286,311.30 and 72,621.40 is: 108,891.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,946.20 : 286,311.30 = 72,621.40 : x
  2. Step 2: Convert to fraction form
    190,946.20/286,311.30 = 72,621.40/x
  3. Step 3: Cross multiply
    190,946.20x = 286,311.30 × 72,621.40
  4. Step 4: Simplify right side
    190,946.20x = 20,792,327,441.82
  5. Step 5: Solve for x
    x = 20,792,327,441.82/190,946.20
  6. Step 6: Final answer
    x = 108,891.03

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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.