Finding the Fourth Proportional to 121,738,341.08, 167,980,969.68 and 74,029,256.84
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Solution
The fourth proportional to 121,738,341.08, 167,980,969.68 and 74,029,256.84 is: 102,149,464.49
Step by Step Solution
- Step 1: Write the proportion equation
121,738,341.08 : 167,980,969.68 = 74,029,256.84 : x - Step 2: Convert to fraction form
121,738,341.08/167,980,969.68 = 74,029,256.84/x - Step 3: Cross multiply
121,738,341.08x = 167,980,969.68 × 74,029,256.84 - Step 4: Simplify right side
121,738,341.08x = 12,435,506,348,672,974 - Step 5: Solve for x
x = 12,435,506,348,672,974/121,738,341.08 - Step 6: Final answer
x = 102,149,464.49
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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.