Finding the Fourth Proportional to 128,974,098.24, 177,976,193.40 and 71,027,346.24
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Solution
The fourth proportional to 128,974,098.24, 177,976,193.40 and 71,027,346.24 is: 98,013,297.89
Step by Step Solution
- Step 1: Write the proportion equation
128,974,098.24 : 177,976,193.40 = 71,027,346.24 : x - Step 2: Convert to fraction form
128,974,098.24/177,976,193.40 = 71,027,346.24/x - Step 3: Cross multiply
128,974,098.24x = 177,976,193.40 × 71,027,346.24 - Step 4: Simplify right side
128,974,098.24x = 12,641,176,711,099,002 - Step 5: Solve for x
x = 12,641,176,711,099,002/128,974,098.24 - Step 6: Final answer
x = 98,013,297.89
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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.