Finding the Fourth Proportional to 206,856,802.60, 310,285,203.90 and 91,719,125.80
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Solution
The fourth proportional to 206,856,802.60, 310,285,203.90 and 91,719,125.80 is: 137,578,688.70
Step by Step Solution
- Step 1: Write the proportion equation
206,856,802.60 : 310,285,203.90 = 91,719,125.80 : x - Step 2: Convert to fraction form
206,856,802.60/310,285,203.90 = 91,719,125.80/x - Step 3: Cross multiply
206,856,802.60x = 310,285,203.90 × 91,719,125.80 - Step 4: Simplify right side
206,856,802.60x = 28,459,087,650,382,748 - Step 5: Solve for x
x = 28,459,087,650,382,748/206,856,802.60 - Step 6: Final answer
x = 137,578,688.70
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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.