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Finding the Fourth Proportional to 100.86, 151.12 and 97.06

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Solution

The fourth proportional to 100.86, 151.12 and 97.06 is: 145.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.86 : 151.12 = 97.06 : x
  2. Step 2: Convert to fraction form
    100.86/151.12 = 97.06/x
  3. Step 3: Cross multiply
    100.86x = 151.12 × 97.06
  4. Step 4: Simplify right side
    100.86x = 14,667.71
  5. Step 5: Solve for x
    x = 14,667.71/100.86
  6. Step 6: Final answer
    x = 145.43

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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.