Finding the Fourth Proportional to 128,602,306.10, 177,486,396.82 and 76,391,548.04
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Solution
The fourth proportional to 128,602,306.10, 177,486,396.82 and 76,391,548.04 is: 105,429,373.86
Step by Step Solution
- Step 1: Write the proportion equation
128,602,306.10 : 177,486,396.82 = 76,391,548.04 : x - Step 2: Convert to fraction form
128,602,306.10/177,486,396.82 = 76,391,548.04/x - Step 3: Cross multiply
128,602,306.10x = 177,486,396.82 × 76,391,548.04 - Step 4: Simplify right side
128,602,306.10x = 13,558,460,609,121,534 - Step 5: Solve for x
x = 13,558,460,609,121,534/128,602,306.10 - Step 6: Final answer
x = 105,429,373.86
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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.