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Finding the Fourth Proportional to 190,425.57, 285,824.25 and 90,654.63

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Solution

The fourth proportional to 190,425.57, 285,824.25 and 90,654.63 is: 136,070.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,425.57 : 285,824.25 = 90,654.63 : x
  2. Step 2: Convert to fraction form
    190,425.57/285,824.25 = 90,654.63/x
  3. Step 3: Cross multiply
    190,425.57x = 285,824.25 × 90,654.63
  4. Step 4: Simplify right side
    190,425.57x = 25,911,291,628.78
  5. Step 5: Solve for x
    x = 25,911,291,628.78/190,425.57
  6. Step 6: Final answer
    x = 136,070.44

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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.