Finding the Fourth Proportional to 159,479,623.80, 239,219,435.70 and 78,858,055.80
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Solution
The fourth proportional to 159,479,623.80, 239,219,435.70 and 78,858,055.80 is: 118,287,083.70
Step by Step Solution
- Step 1: Write the proportion equation
159,479,623.80 : 239,219,435.70 = 78,858,055.80 : x - Step 2: Convert to fraction form
159,479,623.80/239,219,435.70 = 78,858,055.80/x - Step 3: Cross multiply
159,479,623.80x = 239,219,435.70 × 78,858,055.80 - Step 4: Simplify right side
159,479,623.80x = 18,864,379,608,875,112 - Step 5: Solve for x
x = 18,864,379,608,875,112/159,479,623.80 - Step 6: Final answer
x = 118,287,083.70
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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.