Home / 208,176,387.80-312,040,632.90-78,733,981.40

Finding the Fourth Proportional to 208,176,387.80, 312,040,632.90 and 78,733,981.40

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Solution

The fourth proportional to 208,176,387.80, 312,040,632.90 and 78,733,981.40 is: 118,016,272.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,176,387.80 : 312,040,632.90 = 78,733,981.40 : x
  2. Step 2: Convert to fraction form
    208,176,387.80/312,040,632.90 = 78,733,981.40/x
  3. Step 3: Cross multiply
    208,176,387.80x = 312,040,632.90 × 78,733,981.40
  4. Step 4: Simplify right side
    208,176,387.80x = 24,568,201,386,792,828
  5. Step 5: Solve for x
    x = 24,568,201,386,792,828/208,176,387.80
  6. Step 6: Final answer
    x = 118,016,272.87

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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.