Home / 68,688,136.80-103,032,205.20-68,209,839.90

Finding the Fourth Proportional to 68,688,136.80, 103,032,205.20 and 68,209,839.90

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Solution

The fourth proportional to 68,688,136.80, 103,032,205.20 and 68,209,839.90 is: 102,314,759.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,688,136.80 : 103,032,205.20 = 68,209,839.90 : x
  2. Step 2: Convert to fraction form
    68,688,136.80/103,032,205.20 = 68,209,839.90/x
  3. Step 3: Cross multiply
    68,688,136.80x = 103,032,205.20 × 68,209,839.90
  4. Step 4: Simplify right side
    68,688,136.80x = 7,027,810,221,235,948
  5. Step 5: Solve for x
    x = 7,027,810,221,235,948/68,688,136.80
  6. Step 6: Final answer
    x = 102,314,759.85

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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.