Finding the Fourth Proportional to 118,484,343.40, 163,508,985.42 and 66,273,378.92
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Solution
The fourth proportional to 118,484,343.40, 163,508,985.42 and 66,273,378.92 is: 91,457,593.78
Step by Step Solution
- Step 1: Write the proportion equation
118,484,343.40 : 163,508,985.42 = 66,273,378.92 : x - Step 2: Convert to fraction form
118,484,343.40/163,508,985.42 = 66,273,378.92/x - Step 3: Cross multiply
118,484,343.40x = 163,508,985.42 × 66,273,378.92 - Step 4: Simplify right side
118,484,343.40x = 10,836,292,947,564,414 - Step 5: Solve for x
x = 10,836,292,947,564,414/118,484,343.40 - Step 6: Final answer
x = 91,457,593.78
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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.