Finding the Fourth Proportional to 121,717,918.40, 167,974,789.57 and 66,713,915.84
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Solution
The fourth proportional to 121,717,918.40, 167,974,789.57 and 66,713,915.84 is: 92,067,430.35
Step by Step Solution
- Step 1: Write the proportion equation
121,717,918.40 : 167,974,789.57 = 66,713,915.84 : x - Step 2: Convert to fraction form
121,717,918.40/167,974,789.57 = 66,713,915.84/x - Step 3: Cross multiply
121,717,918.40x = 167,974,789.57 × 66,713,915.84 - Step 4: Simplify right side
121,717,918.40x = 11,206,255,973,608,030 - Step 5: Solve for x
x = 11,206,255,973,608,030/121,717,918.40 - Step 6: Final answer
x = 92,067,430.35
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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.