Finding the Fourth Proportional to 163,577,989.80, 245,366,984.70 and 126,988,276.95
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Solution
The fourth proportional to 163,577,989.80, 245,366,984.70 and 126,988,276.95 is: 190,482,415.43
Step by Step Solution
- Step 1: Write the proportion equation
163,577,989.80 : 245,366,984.70 = 126,988,276.95 : x - Step 2: Convert to fraction form
163,577,989.80/245,366,984.70 = 126,988,276.95/x - Step 3: Cross multiply
163,577,989.80x = 245,366,984.70 × 126,988,276.95 - Step 4: Simplify right side
163,577,989.80x = 31,158,730,607,470,012 - Step 5: Solve for x
x = 31,158,730,607,470,012/163,577,989.80 - Step 6: Final answer
x = 190,482,415.43
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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.