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Finding the Fourth Proportional to 148,245.78, 204,603.24 and 90,916.98

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Solution

The fourth proportional to 148,245.78, 204,603.24 and 90,916.98 is: 125,480.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,245.78 : 204,603.24 = 90,916.98 : x
  2. Step 2: Convert to fraction form
    148,245.78/204,603.24 = 90,916.98/x
  3. Step 3: Cross multiply
    148,245.78x = 204,603.24 × 90,916.98
  4. Step 4: Simplify right side
    148,245.78x = 18,601,908,679.02
  5. Step 5: Solve for x
    x = 18,601,908,679.02/148,245.78
  6. Step 6: Final answer
    x = 125,480.19

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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.