Finding the Fourth Proportional to 129,659,331.36, 178,930,412.68 and 70,120,626.18
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Solution
The fourth proportional to 129,659,331.36, 178,930,412.68 and 70,120,626.18 is: 96,766,753.68
Step by Step Solution
- Step 1: Write the proportion equation
129,659,331.36 : 178,930,412.68 = 70,120,626.18 : x - Step 2: Convert to fraction form
129,659,331.36/178,930,412.68 = 70,120,626.18/x - Step 3: Cross multiply
129,659,331.36x = 178,930,412.68 × 70,120,626.18 - Step 4: Simplify right side
129,659,331.36x = 12,546,712,580,254,028 - Step 5: Solve for x
x = 12,546,712,580,254,028/129,659,331.36 - Step 6: Final answer
x = 96,766,753.68
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1.5x scale
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.