Home / 139,968,400.80-209,952,601.20-68,304,784.80

Finding the Fourth Proportional to 139,968,400.80, 209,952,601.20 and 68,304,784.80

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Solution

The fourth proportional to 139,968,400.80, 209,952,601.20 and 68,304,784.80 is: 102,457,177.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,400.80 : 209,952,601.20 = 68,304,784.80 : x
  2. Step 2: Convert to fraction form
    139,968,400.80/209,952,601.20 = 68,304,784.80/x
  3. Step 3: Cross multiply
    139,968,400.80x = 209,952,601.20 × 68,304,784.80
  4. Step 4: Simplify right side
    139,968,400.80x = 14,340,767,243,166,220
  5. Step 5: Solve for x
    x = 14,340,767,243,166,220/139,968,400.80
  6. Step 6: Final answer
    x = 102,457,177.20

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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.