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Finding the Fourth Proportional to 95.02, 143.12 and 86.52

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Solution

The fourth proportional to 95.02, 143.12 and 86.52 is: 130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.02 : 143.12 = 86.52 : x
  2. Step 2: Convert to fraction form
    95.02/143.12 = 86.52/x
  3. Step 3: Cross multiply
    95.02x = 143.12 × 86.52
  4. Step 4: Simplify right side
    95.02x = 12,382.74
  5. Step 5: Solve for x
    x = 12,382.74/95.02
  6. Step 6: Final answer
    x = 130.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.