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Finding the Fourth Proportional to 201,664.70, 302,497.05 and 83,420.90

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Solution

The fourth proportional to 201,664.70, 302,497.05 and 83,420.90 is: 125,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,664.70 : 302,497.05 = 83,420.90 : x
  2. Step 2: Convert to fraction form
    201,664.70/302,497.05 = 83,420.90/x
  3. Step 3: Cross multiply
    201,664.70x = 302,497.05 × 83,420.90
  4. Step 4: Simplify right side
    201,664.70x = 25,234,576,158.35
  5. Step 5: Solve for x
    x = 25,234,576,158.35/201,664.70
  6. Step 6: Final answer
    x = 125,131.35

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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.