Finding the Fourth Proportional to 137,648,414.42, 189,959,824.44 and 74,921,482.96
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Solution
The fourth proportional to 137,648,414.42, 189,959,824.44 and 74,921,482.96 is: 103,394,374.79
Step by Step Solution
- Step 1: Write the proportion equation
137,648,414.42 : 189,959,824.44 = 74,921,482.96 : x - Step 2: Convert to fraction form
137,648,414.42/189,959,824.44 = 74,921,482.96/x - Step 3: Cross multiply
137,648,414.42x = 189,959,824.44 × 74,921,482.96 - Step 4: Simplify right side
137,648,414.42x = 14,232,071,749,866,050 - Step 5: Solve for x
x = 14,232,071,749,866,050/137,648,414.42 - Step 6: Final answer
x = 103,394,374.79
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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.