Finding the Fourth Proportional to 134,102,945.94, 185,020,472.88 and 78,308,118.11
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Solution
The fourth proportional to 134,102,945.94, 185,020,472.88 and 78,308,118.11 is: 108,040,915.44
Step by Step Solution
- Step 1: Write the proportion equation
134,102,945.94 : 185,020,472.88 = 78,308,118.11 : x - Step 2: Convert to fraction form
134,102,945.94/185,020,472.88 = 78,308,118.11/x - Step 3: Cross multiply
134,102,945.94x = 185,020,472.88 × 78,308,118.11 - Step 4: Simplify right side
134,102,945.94x = 14,488,605,042,129,990 - Step 5: Solve for x
x = 14,488,605,042,129,990/134,102,945.94 - Step 6: Final answer
x = 108,040,915.44
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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.