Finding the Fourth Proportional to 115,707,147.80, 159,677,823.84 and 63,501,040.76
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Solution
The fourth proportional to 115,707,147.80, 159,677,823.84 and 63,501,040.76 is: 87,632,511.84
Step by Step Solution
- Step 1: Write the proportion equation
115,707,147.80 : 159,677,823.84 = 63,501,040.76 : x - Step 2: Convert to fraction form
115,707,147.80/159,677,823.84 = 63,501,040.76/x - Step 3: Cross multiply
115,707,147.80x = 159,677,823.84 × 63,501,040.76 - Step 4: Simplify right side
115,707,147.80x = 10,139,708,000,131,940 - Step 5: Solve for x
x = 10,139,708,000,131,940/115,707,147.80 - Step 6: Final answer
x = 87,632,511.84
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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.