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Finding the Fourth Proportional to 145.10, 200.06 and 113.92

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Solution

The fourth proportional to 145.10, 200.06 and 113.92 is: 157.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.10 : 200.06 = 113.92 : x
  2. Step 2: Convert to fraction form
    145.10/200.06 = 113.92/x
  3. Step 3: Cross multiply
    145.10x = 200.06 × 113.92
  4. Step 4: Simplify right side
    145.10x = 22,790.84
  5. Step 5: Solve for x
    x = 22,790.84/145.10
  6. Step 6: Final answer
    x = 157.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.