Finding the Fourth Proportional to 147,374,009.28, 203,372,541.32 and 81,293,060.70
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Solution
The fourth proportional to 147,374,009.28, 203,372,541.32 and 81,293,060.70 is: 112,182,442.66
Step by Step Solution
- Step 1: Write the proportion equation
147,374,009.28 : 203,372,541.32 = 81,293,060.70 : x - Step 2: Convert to fraction form
147,374,009.28/203,372,541.32 = 81,293,060.70/x - Step 3: Cross multiply
147,374,009.28x = 203,372,541.32 × 81,293,060.70 - Step 4: Simplify right side
147,374,009.28x = 16,532,776,345,833,554 - Step 5: Solve for x
x = 16,532,776,345,833,554/147,374,009.28 - Step 6: Final answer
x = 112,182,442.66
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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.