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Finding the Fourth Proportional to 132,991.70, 183,314.15 and 89,955.49

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Solution

The fourth proportional to 132,991.70, 183,314.15 and 89,955.49 is: 123,993.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,991.70 : 183,314.15 = 89,955.49 : x
  2. Step 2: Convert to fraction form
    132,991.70/183,314.15 = 89,955.49/x
  3. Step 3: Cross multiply
    132,991.70x = 183,314.15 × 89,955.49
  4. Step 4: Simplify right side
    132,991.70x = 16,490,113,737.41
  5. Step 5: Solve for x
    x = 16,490,113,737.41/132,991.70
  6. Step 6: Final answer
    x = 123,993.56

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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.