Home / 133,020,403.80-199,530,605.70-81,736,128.60

Finding the Fourth Proportional to 133,020,403.80, 199,530,605.70 and 81,736,128.60

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Solution

The fourth proportional to 133,020,403.80, 199,530,605.70 and 81,736,128.60 is: 122,604,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,020,403.80 : 199,530,605.70 = 81,736,128.60 : x
  2. Step 2: Convert to fraction form
    133,020,403.80/199,530,605.70 = 81,736,128.60/x
  3. Step 3: Cross multiply
    133,020,403.80x = 199,530,605.70 × 81,736,128.60
  4. Step 4: Simplify right side
    133,020,403.80x = 16,308,859,247,131,090
  5. Step 5: Solve for x
    x = 16,308,859,247,131,090/133,020,403.80
  6. Step 6: Final answer
    x = 122,604,192.90

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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.