Home / 190,940.70-286,303.05-72,615.90

Finding the Fourth Proportional to 190,940.70, 286,303.05 and 72,615.90

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Solution

The fourth proportional to 190,940.70, 286,303.05 and 72,615.90 is: 108,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,940.70 : 286,303.05 = 72,615.90 : x
  2. Step 2: Convert to fraction form
    190,940.70/286,303.05 = 72,615.90/x
  3. Step 3: Cross multiply
    190,940.70x = 286,303.05 × 72,615.90
  4. Step 4: Simplify right side
    190,940.70x = 20,790,153,648.50
  5. Step 5: Solve for x
    x = 20,790,153,648.50/190,940.70
  6. Step 6: Final answer
    x = 108,882.78

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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.