Finding the Fourth Proportional to 163,577,987.30, 245,366,980.95 and 126,988,274.45
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Solution
The fourth proportional to 163,577,987.30, 245,366,980.95 and 126,988,274.45 is: 190,482,411.68
Step by Step Solution
- Step 1: Write the proportion equation
163,577,987.30 : 245,366,980.95 = 126,988,274.45 : x - Step 2: Convert to fraction form
163,577,987.30/245,366,980.95 = 126,988,274.45/x - Step 3: Cross multiply
163,577,987.30x = 245,366,980.95 × 126,988,274.45 - Step 4: Simplify right side
163,577,987.30x = 31,158,729,517,846,520 - Step 5: Solve for x
x = 31,158,729,517,846,520/163,577,987.30 - Step 6: Final answer
x = 190,482,411.68
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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.