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Finding the Fourth Proportional to 93,957.65, 140,936.47 and 81,269.70

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Solution

The fourth proportional to 93,957.65, 140,936.47 and 81,269.70 is: 121,904.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,957.65 : 140,936.47 = 81,269.70 : x
  2. Step 2: Convert to fraction form
    93,957.65/140,936.47 = 81,269.70/x
  3. Step 3: Cross multiply
    93,957.65x = 140,936.47 × 81,269.70
  4. Step 4: Simplify right side
    93,957.65x = 11,453,864,635.96
  5. Step 5: Solve for x
    x = 11,453,864,635.96/93,957.65
  6. Step 6: Final answer
    x = 121,904.55

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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.