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Finding the Fourth Proportional to 148,889.36, 205,450.08 and 85,223.36

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Solution

The fourth proportional to 148,889.36, 205,450.08 and 85,223.36 is: 117,598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,889.36 : 205,450.08 = 85,223.36 : x
  2. Step 2: Convert to fraction form
    148,889.36/205,450.08 = 85,223.36/x
  3. Step 3: Cross multiply
    148,889.36x = 205,450.08 × 85,223.36
  4. Step 4: Simplify right side
    148,889.36x = 17,509,146,129.87
  5. Step 5: Solve for x
    x = 17,509,146,129.87/148,889.36
  6. Step 6: Final answer
    x = 117,598.37

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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.