Finding the Fourth Proportional to 159,117,191.21, 219,569,853.48 and 89,489,119.99
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Solution
The fourth proportional to 159,117,191.21, 219,569,853.48 and 89,489,119.99 is: 123,488,309.56
Step by Step Solution
- Step 1: Write the proportion equation
159,117,191.21 : 219,569,853.48 = 89,489,119.99 : x - Step 2: Convert to fraction form
159,117,191.21/219,569,853.48 = 89,489,119.99/x - Step 3: Cross multiply
159,117,191.21x = 219,569,853.48 × 89,489,119.99 - Step 4: Simplify right side
159,117,191.21x = 19,649,112,964,258,436 - Step 5: Solve for x
x = 19,649,112,964,258,436/159,117,191.21 - Step 6: Final answer
x = 123,488,309.56
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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.