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Finding the Fourth Proportional to 134.64, 200.70 and 123.70

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Solution

The fourth proportional to 134.64, 200.70 and 123.70 is: 184.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.64 : 200.70 = 123.70 : x
  2. Step 2: Convert to fraction form
    134.64/200.70 = 123.70/x
  3. Step 3: Cross multiply
    134.64x = 200.70 × 123.70
  4. Step 4: Simplify right side
    134.64x = 24,827.38
  5. Step 5: Solve for x
    x = 24,827.38/134.64
  6. Step 6: Final answer
    x = 184.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.