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Finding the Fourth Proportional to 93,888.16, 140,126.96 and 81,181.84

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Solution

The fourth proportional to 93,888.16, 140,126.96 and 81,181.84 is: 121,162.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,888.16 : 140,126.96 = 81,181.84 : x
  2. Step 2: Convert to fraction form
    93,888.16/140,126.96 = 81,181.84/x
  3. Step 3: Cross multiply
    93,888.16x = 140,126.96 × 81,181.84
  4. Step 4: Simplify right side
    93,888.16x = 11,375,764,446.41
  5. Step 5: Solve for x
    x = 11,375,764,446.41/93,888.16
  6. Step 6: Final answer
    x = 121,162.93

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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.