Finding the Fourth Proportional to 123,386,829.40, 170,273,840.70 and 68,386,236.76
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Solution
The fourth proportional to 123,386,829.40, 170,273,840.70 and 68,386,236.76 is: 94,373,015.67
Step by Step Solution
- Step 1: Write the proportion equation
123,386,829.40 : 170,273,840.70 = 68,386,236.76 : x - Step 2: Convert to fraction form
123,386,829.40/170,273,840.70 = 68,386,236.76/x - Step 3: Cross multiply
123,386,829.40x = 170,273,840.70 × 68,386,236.76 - Step 4: Simplify right side
123,386,829.40x = 11,644,387,184,144,724 - Step 5: Solve for x
x = 11,644,387,184,144,724/123,386,829.40 - Step 6: Final answer
x = 94,373,015.67
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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.