Home / 190,939.20-286,300.80-72,614.40

Finding the Fourth Proportional to 190,939.20, 286,300.80 and 72,614.40

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Solution

The fourth proportional to 190,939.20, 286,300.80 and 72,614.40 is: 108,880.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,939.20 : 286,300.80 = 72,614.40 : x
  2. Step 2: Convert to fraction form
    190,939.20/286,300.80 = 72,614.40/x
  3. Step 3: Cross multiply
    190,939.20x = 286,300.80 × 72,614.40
  4. Step 4: Simplify right side
    190,939.20x = 20,789,560,811.52
  5. Step 5: Solve for x
    x = 20,789,560,811.52/190,939.20
  6. Step 6: Final answer
    x = 108,880.53

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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.