Finding the Fourth Proportional to 136,242,591.12, 188,014,956.84 and 87,350,017.68
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Solution
The fourth proportional to 136,242,591.12, 188,014,956.84 and 87,350,017.68 is: 120,543,140.50
Step by Step Solution
- Step 1: Write the proportion equation
136,242,591.12 : 188,014,956.84 = 87,350,017.68 : x - Step 2: Convert to fraction form
136,242,591.12/188,014,956.84 = 87,350,017.68/x - Step 3: Cross multiply
136,242,591.12x = 188,014,956.84 × 87,350,017.68 - Step 4: Simplify right side
136,242,591.12x = 16,423,109,804,078,438 - Step 5: Solve for x
x = 16,423,109,804,078,438/136,242,591.12 - Step 6: Final answer
x = 120,543,140.50
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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.