Home / 79,189,287.80-118,689,453.30-71,064,145.40

Finding the Fourth Proportional to 79,189,287.80, 118,689,453.30 and 71,064,145.40

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Solution

The fourth proportional to 79,189,287.80, 118,689,453.30 and 71,064,145.40 is: 106,511,433.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,189,287.80 : 118,689,453.30 = 71,064,145.40 : x
  2. Step 2: Convert to fraction form
    79,189,287.80/118,689,453.30 = 71,064,145.40/x
  3. Step 3: Cross multiply
    79,189,287.80x = 118,689,453.30 × 71,064,145.40
  4. Step 4: Simplify right side
    79,189,287.80x = 8,434,564,566,757,710
  5. Step 5: Solve for x
    x = 8,434,564,566,757,710/79,189,287.80
  6. Step 6: Final answer
    x = 106,511,433.57

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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.