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Finding the Fourth Proportional to 117,783.80, 162,541.32 and 66,100.94

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Solution

The fourth proportional to 117,783.80, 162,541.32 and 66,100.94 is: 91,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,783.80 : 162,541.32 = 66,100.94 : x
  2. Step 2: Convert to fraction form
    117,783.80/162,541.32 = 66,100.94/x
  3. Step 3: Cross multiply
    117,783.80x = 162,541.32 × 66,100.94
  4. Step 4: Simplify right side
    117,783.80x = 10,744,134,040.84
  5. Step 5: Solve for x
    x = 10,744,134,040.84/117,783.80
  6. Step 6: Final answer
    x = 91,219.12

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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.