Finding the Fourth Proportional to 137,889,949.91, 190,299,506.67 and 79,163,947.94
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Solution
The fourth proportional to 137,889,949.91, 190,299,506.67 and 79,163,947.94 is: 109,252,779.11
Step by Step Solution
- Step 1: Write the proportion equation
137,889,949.91 : 190,299,506.67 = 79,163,947.94 : x - Step 2: Convert to fraction form
137,889,949.91/190,299,506.67 = 79,163,947.94/x - Step 3: Cross multiply
137,889,949.91x = 190,299,506.67 × 79,163,947.94 - Step 4: Simplify right side
137,889,949.91x = 15,064,860,238,080,064 - Step 5: Solve for x
x = 15,064,860,238,080,064/137,889,949.91 - Step 6: Final answer
x = 109,252,779.11
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.