Finding the Fourth Proportional to 125,817,901.30, 188,511,323.10 and 99,989,868.70
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Solution
The fourth proportional to 125,817,901.30, 188,511,323.10 and 99,989,868.70 is: 149,813,518.19
Step by Step Solution
- Step 1: Write the proportion equation
125,817,901.30 : 188,511,323.10 = 99,989,868.70 : x - Step 2: Convert to fraction form
125,817,901.30/188,511,323.10 = 99,989,868.70/x - Step 3: Cross multiply
125,817,901.30x = 188,511,323.10 × 99,989,868.70 - Step 4: Simplify right side
125,817,901.30x = 18,849,222,445,232,276 - Step 5: Solve for x
x = 18,849,222,445,232,276/125,817,901.30 - Step 6: Final answer
x = 149,813,518.19
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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.