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Finding the Fourth Proportional to 116,990.96, 161,447.55 and 66,014.51

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Solution

The fourth proportional to 116,990.96, 161,447.55 and 66,014.51 is: 91,100.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,990.96 : 161,447.55 = 66,014.51 : x
  2. Step 2: Convert to fraction form
    116,990.96/161,447.55 = 66,014.51/x
  3. Step 3: Cross multiply
    116,990.96x = 161,447.55 × 66,014.51
  4. Step 4: Simplify right side
    116,990.96x = 10,657,880,903.95
  5. Step 5: Solve for x
    x = 10,657,880,903.95/116,990.96
  6. Step 6: Final answer
    x = 91,100.04

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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.