Finding the Fourth Proportional to 129,312,022.20, 193,968,033.30 and 115,281,979.80
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Solution
The fourth proportional to 129,312,022.20, 193,968,033.30 and 115,281,979.80 is: 172,922,969.70
Step by Step Solution
- Step 1: Write the proportion equation
129,312,022.20 : 193,968,033.30 = 115,281,979.80 : x - Step 2: Convert to fraction form
129,312,022.20/193,968,033.30 = 115,281,979.80/x - Step 3: Cross multiply
129,312,022.20x = 193,968,033.30 × 115,281,979.80 - Step 4: Simplify right side
129,312,022.20x = 22,361,018,896,736,328 - Step 5: Solve for x
x = 22,361,018,896,736,328/129,312,022.20 - Step 6: Final answer
x = 172,922,969.70
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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.