Finding the Fourth Proportional to 163,905,917.80, 245,858,876.70 and 156,347,645.80
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Solution
The fourth proportional to 163,905,917.80, 245,858,876.70 and 156,347,645.80 is: 234,521,468.70
Step by Step Solution
- Step 1: Write the proportion equation
163,905,917.80 : 245,858,876.70 = 156,347,645.80 : x - Step 2: Convert to fraction form
163,905,917.80/245,858,876.70 = 156,347,645.80/x - Step 3: Cross multiply
163,905,917.80x = 245,858,876.70 × 156,347,645.80 - Step 4: Simplify right side
163,905,917.80x = 38,439,456,571,077,472 - Step 5: Solve for x
x = 38,439,456,571,077,472/163,905,917.80 - Step 6: Final answer
x = 234,521,468.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.