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Finding the Fourth Proportional to 93.46, 129.04 and 70.18

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Solution

The fourth proportional to 93.46, 129.04 and 70.18 is: 96.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.46 : 129.04 = 70.18 : x
  2. Step 2: Convert to fraction form
    93.46/129.04 = 70.18/x
  3. Step 3: Cross multiply
    93.46x = 129.04 × 70.18
  4. Step 4: Simplify right side
    93.46x = 9,056.03
  5. Step 5: Solve for x
    x = 9,056.03/93.46
  6. Step 6: Final answer
    x = 96.90

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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.