Finding the Fourth Proportional to 143,665,387.19, 198,258,226.73 and 77,585,879.09
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Solution
The fourth proportional to 143,665,387.19, 198,258,226.73 and 77,585,879.09 is: 107,068,509.04
Step by Step Solution
- Step 1: Write the proportion equation
143,665,387.19 : 198,258,226.73 = 77,585,879.09 : x - Step 2: Convert to fraction form
143,665,387.19/198,258,226.73 = 77,585,879.09/x - Step 3: Cross multiply
143,665,387.19x = 198,258,226.73 × 77,585,879.09 - Step 4: Simplify right side
143,665,387.19x = 15,382,038,807,391,858 - Step 5: Solve for x
x = 15,382,038,807,391,858/143,665,387.19 - Step 6: Final answer
x = 107,068,509.04
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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.