Finding the Fourth Proportional to 128,759,743.80, 193,139,615.70 and 123,737,626.35
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Solution
The fourth proportional to 128,759,743.80, 193,139,615.70 and 123,737,626.35 is: 185,606,439.53
Step by Step Solution
- Step 1: Write the proportion equation
128,759,743.80 : 193,139,615.70 = 123,737,626.35 : x - Step 2: Convert to fraction form
128,759,743.80/193,139,615.70 = 123,737,626.35/x - Step 3: Cross multiply
128,759,743.80x = 193,139,615.70 × 123,737,626.35 - Step 4: Simplify right side
128,759,743.80x = 23,898,637,600,869,192 - Step 5: Solve for x
x = 23,898,637,600,869,192/128,759,743.80 - Step 6: Final answer
x = 185,606,439.53
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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.