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Finding the Fourth Proportional to 93.03, 139.01 and 91.32

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Solution

The fourth proportional to 93.03, 139.01 and 91.32 is: 136.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.03 : 139.01 = 91.32 : x
  2. Step 2: Convert to fraction form
    93.03/139.01 = 91.32/x
  3. Step 3: Cross multiply
    93.03x = 139.01 × 91.32
  4. Step 4: Simplify right side
    93.03x = 12,693.94
  5. Step 5: Solve for x
    x = 12,693.94/93.03
  6. Step 6: Final answer
    x = 136.45

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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.