Home / 91,045,338.40-136,568,007.60-81,479,400.40

Finding the Fourth Proportional to 91,045,338.40, 136,568,007.60 and 81,479,400.40

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Solution

The fourth proportional to 91,045,338.40, 136,568,007.60 and 81,479,400.40 is: 122,219,100.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,045,338.40 : 136,568,007.60 = 81,479,400.40 : x
  2. Step 2: Convert to fraction form
    91,045,338.40/136,568,007.60 = 81,479,400.40/x
  3. Step 3: Cross multiply
    91,045,338.40x = 136,568,007.60 × 81,479,400.40
  4. Step 4: Simplify right side
    91,045,338.40x = 11,127,479,373,070,644
  5. Step 5: Solve for x
    x = 11,127,479,373,070,644/91,045,338.40
  6. Step 6: Final answer
    x = 122,219,100.60

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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.