Finding the Fourth Proportional to 122,458,574.40, 168,992,841.84 and 67,454,430.88
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Solution
The fourth proportional to 122,458,574.40, 168,992,841.84 and 67,454,430.88 is: 93,087,119.66
Step by Step Solution
- Step 1: Write the proportion equation
122,458,574.40 : 168,992,841.84 = 67,454,430.88 : x - Step 2: Convert to fraction form
122,458,574.40/168,992,841.84 = 67,454,430.88/x - Step 3: Cross multiply
122,458,574.40x = 168,992,841.84 × 67,454,430.88 - Step 4: Simplify right side
122,458,574.40x = 11,399,315,969,111,052 - Step 5: Solve for x
x = 11,399,315,969,111,052/122,458,574.40 - Step 6: Final answer
x = 93,087,119.66
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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.