Finding the Fourth Proportional to 154,530,438.84, 213,253,702.92 and 84,915,837.72
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Solution
The fourth proportional to 154,530,438.84, 213,253,702.92 and 84,915,837.72 is: 117,184,788.75
Step by Step Solution
- Step 1: Write the proportion equation
154,530,438.84 : 213,253,702.92 = 84,915,837.72 : x - Step 2: Convert to fraction form
154,530,438.84/213,253,702.92 = 84,915,837.72/x - Step 3: Cross multiply
154,530,438.84x = 213,253,702.92 × 84,915,837.72 - Step 4: Simplify right side
154,530,438.84x = 18,108,616,830,343,808 - Step 5: Solve for x
x = 18,108,616,830,343,808/154,530,438.84 - Step 6: Final answer
x = 117,184,788.75
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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.