Home / 128,516.98-192,440.13-103,419.94

Finding the Fourth Proportional to 128,516.98, 192,440.13 and 103,419.94

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Solution

The fourth proportional to 128,516.98, 192,440.13 and 103,419.94 is: 154,860.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,516.98 : 192,440.13 = 103,419.94 : x
  2. Step 2: Convert to fraction form
    128,516.98/192,440.13 = 103,419.94/x
  3. Step 3: Cross multiply
    128,516.98x = 192,440.13 × 103,419.94
  4. Step 4: Simplify right side
    128,516.98x = 19,902,146,698.19
  5. Step 5: Solve for x
    x = 19,902,146,698.19/128,516.98
  6. Step 6: Final answer
    x = 154,860.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.