Finding the Fourth Proportional to 120,382,775.68, 166,142,412.54 and 71,490,203.68
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Solution
The fourth proportional to 120,382,775.68, 166,142,412.54 and 71,490,203.68 is: 98,664,903.22
Step by Step Solution
- Step 1: Write the proportion equation
120,382,775.68 : 166,142,412.54 = 71,490,203.68 : x - Step 2: Convert to fraction form
120,382,775.68/166,142,412.54 = 71,490,203.68/x - Step 3: Cross multiply
120,382,775.68x = 166,142,412.54 × 71,490,203.68 - Step 4: Simplify right side
120,382,775.68x = 11,877,554,912,371,186 - Step 5: Solve for x
x = 11,877,554,912,371,186/120,382,775.68 - Step 6: Final answer
x = 98,664,903.22
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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.