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Finding the Fourth Proportional to 235,139.89, 324,495.39 and 127,712.02

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Solution

The fourth proportional to 235,139.89, 324,495.39 and 127,712.02 is: 176,243.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,139.89 : 324,495.39 = 127,712.02 : x
  2. Step 2: Convert to fraction form
    235,139.89/324,495.39 = 127,712.02/x
  3. Step 3: Cross multiply
    235,139.89x = 324,495.39 × 127,712.02
  4. Step 4: Simplify right side
    235,139.89x = 41,441,961,737.59
  5. Step 5: Solve for x
    x = 41,441,961,737.59/235,139.89
  6. Step 6: Final answer
    x = 176,243.86

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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.