Finding the Fourth Proportional to 128,607,702.71, 177,439,528.98 and 72,844,262.91
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Solution
The fourth proportional to 128,607,702.71, 177,439,528.98 and 72,844,262.91 is: 100,502,935.89
Step by Step Solution
- Step 1: Write the proportion equation
128,607,702.71 : 177,439,528.98 = 72,844,262.91 : x - Step 2: Convert to fraction form
128,607,702.71/177,439,528.98 = 72,844,262.91/x - Step 3: Cross multiply
128,607,702.71x = 177,439,528.98 × 72,844,262.91 - Step 4: Simplify right side
128,607,702.71x = 12,925,451,699,645,682 - Step 5: Solve for x
x = 12,925,451,699,645,682/128,607,702.71 - Step 6: Final answer
x = 100,502,935.89
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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.