Finding the Fourth Proportional to 121,530,020.36, 167,711,880.66 and 66,530,994.44
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Solution
The fourth proportional to 121,530,020.36, 167,711,880.66 and 66,530,994.44 is: 91,813,020.08
Step by Step Solution
- Step 1: Write the proportion equation
121,530,020.36 : 167,711,880.66 = 66,530,994.44 : x - Step 2: Convert to fraction form
121,530,020.36/167,711,880.66 = 66,530,994.44/x - Step 3: Cross multiply
121,530,020.36x = 167,711,880.66 × 66,530,994.44 - Step 4: Simplify right side
121,530,020.36x = 11,158,038,199,712,402 - Step 5: Solve for x
x = 11,158,038,199,712,402/121,530,020.36 - Step 6: Final answer
x = 91,813,020.08
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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.