Home / 112,868.01-155,757.81-61,879.65

Finding the Fourth Proportional to 112,868.01, 155,757.81 and 61,879.65

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Solution

The fourth proportional to 112,868.01, 155,757.81 and 61,879.65 is: 85,393.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,868.01 : 155,757.81 = 61,879.65 : x
  2. Step 2: Convert to fraction form
    112,868.01/155,757.81 = 61,879.65/x
  3. Step 3: Cross multiply
    112,868.01x = 155,757.81 × 61,879.65
  4. Step 4: Simplify right side
    112,868.01x = 9,638,237,951.43
  5. Step 5: Solve for x
    x = 9,638,237,951.43/112,868.01
  6. Step 6: Final answer
    x = 85,393.89

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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.