Home / 208,176,386.80-312,040,631.40-78,733,980.40

Finding the Fourth Proportional to 208,176,386.80, 312,040,631.40 and 78,733,980.40

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Solution

The fourth proportional to 208,176,386.80, 312,040,631.40 and 78,733,980.40 is: 118,016,271.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,176,386.80 : 312,040,631.40 = 78,733,980.40 : x
  2. Step 2: Convert to fraction form
    208,176,386.80/312,040,631.40 = 78,733,980.40/x
  3. Step 3: Cross multiply
    208,176,386.80x = 312,040,631.40 × 78,733,980.40
  4. Step 4: Simplify right side
    208,176,386.80x = 24,568,200,956,651,224
  5. Step 5: Solve for x
    x = 24,568,200,956,651,224/208,176,386.80
  6. Step 6: Final answer
    x = 118,016,271.37

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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.