Finding the Fourth Proportional to 126,925,313.40, 190,387,970.10 and 115,777,639.80
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Solution
The fourth proportional to 126,925,313.40, 190,387,970.10 and 115,777,639.80 is: 173,666,459.70
Step by Step Solution
- Step 1: Write the proportion equation
126,925,313.40 : 190,387,970.10 = 115,777,639.80 : x - Step 2: Convert to fraction form
126,925,313.40/190,387,970.10 = 115,777,639.80/x - Step 3: Cross multiply
126,925,313.40x = 190,387,970.10 × 115,777,639.80 - Step 4: Simplify right side
126,925,313.40x = 22,042,669,824,490,968 - Step 5: Solve for x
x = 22,042,669,824,490,968/126,925,313.40 - Step 6: Final answer
x = 173,666,459.70
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1.5x scale
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.