Home / 190,128.60-285,274.44-90,359.28

Finding the Fourth Proportional to 190,128.60, 285,274.44 and 90,359.28

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Solution

The fourth proportional to 190,128.60, 285,274.44 and 90,359.28 is: 135,577.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,128.60 : 285,274.44 = 90,359.28 : x
  2. Step 2: Convert to fraction form
    190,128.60/285,274.44 = 90,359.28/x
  3. Step 3: Cross multiply
    190,128.60x = 285,274.44 × 90,359.28
  4. Step 4: Simplify right side
    190,128.60x = 25,777,193,000.80
  5. Step 5: Solve for x
    x = 25,777,193,000.80/190,128.60
  6. Step 6: Final answer
    x = 135,577.67

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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.