Finding the Fourth Proportional to 139,968,368.90, 209,952,553.35 and 42,923,305.70
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Solution
The fourth proportional to 139,968,368.90, 209,952,553.35 and 42,923,305.70 is: 64,384,958.55
Step by Step Solution
- Step 1: Write the proportion equation
139,968,368.90 : 209,952,553.35 = 42,923,305.70 : x - Step 2: Convert to fraction form
139,968,368.90/209,952,553.35 = 42,923,305.70/x - Step 3: Cross multiply
139,968,368.90x = 209,952,553.35 × 42,923,305.70 - Step 4: Simplify right side
139,968,368.90x = 9,011,857,629,937,610 - Step 5: Solve for x
x = 9,011,857,629,937,610/139,968,368.90 - Step 6: Final answer
x = 64,384,958.55
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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.