Finding the Fourth Proportional to 178,403,815.12, 267,612,979.64 and 84,982,761.68
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Solution
The fourth proportional to 178,403,815.12, 267,612,979.64 and 84,982,761.68 is: 127,477,599.38
Step by Step Solution
- Step 1: Write the proportion equation
178,403,815.12 : 267,612,979.64 = 84,982,761.68 : x - Step 2: Convert to fraction form
178,403,815.12/267,612,979.64 = 84,982,761.68/x - Step 3: Cross multiply
178,403,815.12x = 267,612,979.64 × 84,982,761.68 - Step 4: Simplify right side
178,403,815.12x = 22,742,490,071,220,812 - Step 5: Solve for x
x = 22,742,490,071,220,812/178,403,815.12 - Step 6: Final answer
x = 127,477,599.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.