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Finding the Fourth Proportional to 93.95, 139.91 and 93.43

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Solution

The fourth proportional to 93.95, 139.91 and 93.43 is: 139.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.95 : 139.91 = 93.43 : x
  2. Step 2: Convert to fraction form
    93.95/139.91 = 93.43/x
  3. Step 3: Cross multiply
    93.95x = 139.91 × 93.43
  4. Step 4: Simplify right side
    93.95x = 13,071.79
  5. Step 5: Solve for x
    x = 13,071.79/93.95
  6. Step 6: Final answer
    x = 139.14

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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.