Finding the Fourth Proportional to 138,154,457.60, 190,649,356.80 and 76,273,671.68
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Solution
The fourth proportional to 138,154,457.60, 190,649,356.80 and 76,273,671.68 is: 105,255,571.91
Step by Step Solution
- Step 1: Write the proportion equation
138,154,457.60 : 190,649,356.80 = 76,273,671.68 : x - Step 2: Convert to fraction form
138,154,457.60/190,649,356.80 = 76,273,671.68/x - Step 3: Cross multiply
138,154,457.60x = 190,649,356.80 × 76,273,671.68 - Step 4: Simplify right side
138,154,457.60x = 14,541,526,446,566,378 - Step 5: Solve for x
x = 14,541,526,446,566,378/138,154,457.60 - Step 6: Final answer
x = 105,255,571.91
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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.