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Finding the Fourth Proportional to 133,931.70, 200,897.37 and 54,990.36

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Solution

The fourth proportional to 133,931.70, 200,897.37 and 54,990.36 is: 82,485.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,931.70 : 200,897.37 = 54,990.36 : x
  2. Step 2: Convert to fraction form
    133,931.70/200,897.37 = 54,990.36/x
  3. Step 3: Cross multiply
    133,931.70x = 200,897.37 × 54,990.36
  4. Step 4: Simplify right side
    133,931.70x = 11,047,418,699.35
  5. Step 5: Solve for x
    x = 11,047,418,699.35/133,931.70
  6. Step 6: Final answer
    x = 82,485.47

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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.