Finding the Fourth Proportional to 128,971,632.69, 177,988,333.68 and 97,124,786.55
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Solution
The fourth proportional to 128,971,632.69, 177,988,333.68 and 97,124,786.55 is: 134,037,838.84
Step by Step Solution
- Step 1: Write the proportion equation
128,971,632.69 : 177,988,333.68 = 97,124,786.55 : x - Step 2: Convert to fraction form
128,971,632.69/177,988,333.68 = 97,124,786.55/x - Step 3: Cross multiply
128,971,632.69x = 177,988,333.68 × 97,124,786.55 - Step 4: Simplify right side
128,971,632.69x = 17,287,078,917,060,176 - Step 5: Solve for x
x = 17,287,078,917,060,176/128,971,632.69 - Step 6: Final answer
x = 134,037,838.84
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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.