Home / 112,976.62-155,907.65-61,989.65

Finding the Fourth Proportional to 112,976.62, 155,907.65 and 61,989.65

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Solution

The fourth proportional to 112,976.62, 155,907.65 and 61,989.65 is: 85,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,976.62 : 155,907.65 = 61,989.65 : x
  2. Step 2: Convert to fraction form
    112,976.62/155,907.65 = 61,989.65/x
  3. Step 3: Cross multiply
    112,976.62x = 155,907.65 × 61,989.65
  4. Step 4: Simplify right side
    112,976.62x = 9,664,660,615.91
  5. Step 5: Solve for x
    x = 9,664,660,615.91/112,976.62
  6. Step 6: Final answer
    x = 85,545.67

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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.