Finding the Fourth Proportional to 122,642,099.30, 169,245,319.55 and 69,718,809.75
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Solution
The fourth proportional to 122,642,099.30, 169,245,319.55 and 69,718,809.75 is: 96,211,515.48
Step by Step Solution
- Step 1: Write the proportion equation
122,642,099.30 : 169,245,319.55 = 69,718,809.75 : x - Step 2: Convert to fraction form
122,642,099.30/169,245,319.55 = 69,718,809.75/x - Step 3: Cross multiply
122,642,099.30x = 169,245,319.55 × 69,718,809.75 - Step 4: Simplify right side
122,642,099.30x = 11,799,582,234,435,810 - Step 5: Solve for x
x = 11,799,582,234,435,810/122,642,099.30 - Step 6: Final answer
x = 96,211,515.48
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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.