Finding the Fourth Proportional to 122,164,254, 168,590,160 and 74,482,260.48
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Solution
The fourth proportional to 122,164,254, 168,590,160 and 74,482,260.48 is: 102,787,646.96
Step by Step Solution
- Step 1: Write the proportion equation
122,164,254 : 168,590,160 = 74,482,260.48 : x - Step 2: Convert to fraction form
122,164,254/168,590,160 = 74,482,260.48/x - Step 3: Cross multiply
122,164,254x = 168,590,160 × 74,482,260.48 - Step 4: Simplify right side
122,164,254x = 12,556,976,211,484,878 - Step 5: Solve for x
x = 12,556,976,211,484,878/122,164,254 - Step 6: Final answer
x = 102,787,646.96
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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.