Finding the Fourth Proportional to 122,690,764.80, 169,313,817.60 and 67,686,604.80
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Solution
The fourth proportional to 122,690,764.80, 169,313,817.60 and 67,686,604.80 is: 93,407,824.77
Step by Step Solution
- Step 1: Write the proportion equation
122,690,764.80 : 169,313,817.60 = 67,686,604.80 : x - Step 2: Convert to fraction form
122,690,764.80/169,313,817.60 = 67,686,604.80/x - Step 3: Cross multiply
122,690,764.80x = 169,313,817.60 × 67,686,604.80 - Step 4: Simplify right side
122,690,764.80x = 11,460,277,459,070,484 - Step 5: Solve for x
x = 11,460,277,459,070,484/122,690,764.80 - Step 6: Final answer
x = 93,407,824.77
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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.