Finding the Fourth Proportional to 135,960,315.12, 187,625,261.85 and 74,080,653.66
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Solution
The fourth proportional to 135,960,315.12, 187,625,261.85 and 74,080,653.66 is: 102,231,316.75
Step by Step Solution
- Step 1: Write the proportion equation
135,960,315.12 : 187,625,261.85 = 74,080,653.66 : x - Step 2: Convert to fraction form
135,960,315.12/187,625,261.85 = 74,080,653.66/x - Step 3: Cross multiply
135,960,315.12x = 187,625,261.85 × 74,080,653.66 - Step 4: Simplify right side
135,960,315.12x = 13,899,402,040,976,660 - Step 5: Solve for x
x = 13,899,402,040,976,660/135,960,315.12 - Step 6: Final answer
x = 102,231,316.75
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1.5x scale
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.