Finding the Fourth Proportional to 103,789,134.84, 143,222,862.78 and 57,376,620.84
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Solution
The fourth proportional to 103,789,134.84, 143,222,862.78 and 57,376,620.84 is: 79,176,340.63
Step by Step Solution
- Step 1: Write the proportion equation
103,789,134.84 : 143,222,862.78 = 57,376,620.84 : x - Step 2: Convert to fraction form
103,789,134.84/143,222,862.78 = 57,376,620.84/x - Step 3: Cross multiply
103,789,134.84x = 143,222,862.78 × 57,376,620.84 - Step 4: Simplify right side
103,789,134.84x = 8,217,643,893,347,409 - Step 5: Solve for x
x = 8,217,643,893,347,409/103,789,134.84 - Step 6: Final answer
x = 79,176,340.63
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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.