Finding the Fourth Proportional to 159,843,706.21, 220,584,311.90 and 86,504,848.21
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Solution
The fourth proportional to 159,843,706.21, 220,584,311.90 and 86,504,848.21 is: 119,376,689.08
Step by Step Solution
- Step 1: Write the proportion equation
159,843,706.21 : 220,584,311.90 = 86,504,848.21 : x - Step 2: Convert to fraction form
159,843,706.21/220,584,311.90 = 86,504,848.21/x - Step 3: Cross multiply
159,843,706.21x = 220,584,311.90 × 86,504,848.21 - Step 4: Simplify right side
159,843,706.21x = 19,081,612,418,416,796 - Step 5: Solve for x
x = 19,081,612,418,416,796/159,843,706.21 - Step 6: Final answer
x = 119,376,689.08
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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.