Home / 139,968,141.80-209,952,212.70-79,501,965.80

Finding the Fourth Proportional to 139,968,141.80, 209,952,212.70 and 79,501,965.80

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Solution

The fourth proportional to 139,968,141.80, 209,952,212.70 and 79,501,965.80 is: 119,252,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,141.80 : 209,952,212.70 = 79,501,965.80 : x
  2. Step 2: Convert to fraction form
    139,968,141.80/209,952,212.70 = 79,501,965.80/x
  3. Step 3: Cross multiply
    139,968,141.80x = 209,952,212.70 × 79,501,965.80
  4. Step 4: Simplify right side
    139,968,141.80x = 16,691,613,633,709,724
  5. Step 5: Solve for x
    x = 16,691,613,633,709,724/139,968,141.80
  6. Step 6: Final answer
    x = 119,252,948.70

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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.