Home / 112,704.90-155,516.49-62,403.78

Finding the Fourth Proportional to 112,704.90, 155,516.49 and 62,403.78

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Solution

The fourth proportional to 112,704.90, 155,516.49 and 62,403.78 is: 86,108.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,704.90 : 155,516.49 = 62,403.78 : x
  2. Step 2: Convert to fraction form
    112,704.90/155,516.49 = 62,403.78/x
  3. Step 3: Cross multiply
    112,704.90x = 155,516.49 × 62,403.78
  4. Step 4: Simplify right side
    112,704.90x = 9,704,816,828.33
  5. Step 5: Solve for x
    x = 9,704,816,828.33/112,704.90
  6. Step 6: Final answer
    x = 86,108.21

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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.