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Finding the Fourth Proportional to 145.16, 200.02 and 99.08

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Solution

The fourth proportional to 145.16, 200.02 and 99.08 is: 136.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.16 : 200.02 = 99.08 : x
  2. Step 2: Convert to fraction form
    145.16/200.02 = 99.08/x
  3. Step 3: Cross multiply
    145.16x = 200.02 × 99.08
  4. Step 4: Simplify right side
    145.16x = 19,817.98
  5. Step 5: Solve for x
    x = 19,817.98/145.16
  6. Step 6: Final answer
    x = 136.53

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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.