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Finding the Fourth Proportional to 134,512.50, 185,640.22 and 74,896.50

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Solution

The fourth proportional to 134,512.50, 185,640.22 and 74,896.50 is: 103,364.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,512.50 : 185,640.22 = 74,896.50 : x
  2. Step 2: Convert to fraction form
    134,512.50/185,640.22 = 74,896.50/x
  3. Step 3: Cross multiply
    134,512.50x = 185,640.22 × 74,896.50
  4. Step 4: Simplify right side
    134,512.50x = 13,903,802,737.23
  5. Step 5: Solve for x
    x = 13,903,802,737.23/134,512.50
  6. Step 6: Final answer
    x = 103,364.39

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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.