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Finding the Fourth Proportional to 190,402.80, 285,604.20 and 97,090.80

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Solution

The fourth proportional to 190,402.80, 285,604.20 and 97,090.80 is: 145,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,402.80 : 285,604.20 = 97,090.80 : x
  2. Step 2: Convert to fraction form
    190,402.80/285,604.20 = 97,090.80/x
  3. Step 3: Cross multiply
    190,402.80x = 285,604.20 × 97,090.80
  4. Step 4: Simplify right side
    190,402.80x = 27,729,540,261.36
  5. Step 5: Solve for x
    x = 27,729,540,261.36/190,402.80
  6. Step 6: Final answer
    x = 145,636.20

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1.5x scale

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.