Home / 85,968,211.80-128,952,317.70-68,962,099.80

Finding the Fourth Proportional to 85,968,211.80, 128,952,317.70 and 68,962,099.80

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Solution

The fourth proportional to 85,968,211.80, 128,952,317.70 and 68,962,099.80 is: 103,443,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,211.80 : 128,952,317.70 = 68,962,099.80 : x
  2. Step 2: Convert to fraction form
    85,968,211.80/128,952,317.70 = 68,962,099.80/x
  3. Step 3: Cross multiply
    85,968,211.80x = 128,952,317.70 × 68,962,099.80
  4. Step 4: Simplify right side
    85,968,211.80x = 8,892,822,602,668,706
  5. Step 5: Solve for x
    x = 8,892,822,602,668,706/85,968,211.80
  6. Step 6: Final answer
    x = 103,443,149.70

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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.