Home / 85,270,406.20-127,905,609.30-79,559,711.80

Finding the Fourth Proportional to 85,270,406.20, 127,905,609.30 and 79,559,711.80

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Solution

The fourth proportional to 85,270,406.20, 127,905,609.30 and 79,559,711.80 is: 119,339,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,270,406.20 : 127,905,609.30 = 79,559,711.80 : x
  2. Step 2: Convert to fraction form
    85,270,406.20/127,905,609.30 = 79,559,711.80/x
  3. Step 3: Cross multiply
    85,270,406.20x = 127,905,609.30 × 79,559,711.80
  4. Step 4: Simplify right side
    85,270,406.20x = 10,176,133,413,511,400
  5. Step 5: Solve for x
    x = 10,176,133,413,511,400/85,270,406.20
  6. Step 6: Final answer
    x = 119,339,567.70

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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.