Finding the Fourth Proportional to 140,249,721.24, 193,540,902.66 and 78,370,568.28
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Solution
The fourth proportional to 140,249,721.24, 193,540,902.66 and 78,370,568.28 is: 108,149,309.62
Step by Step Solution
- Step 1: Write the proportion equation
140,249,721.24 : 193,540,902.66 = 78,370,568.28 : x - Step 2: Convert to fraction form
140,249,721.24/193,540,902.66 = 78,370,568.28/x - Step 3: Cross multiply
140,249,721.24x = 193,540,902.66 × 78,370,568.28 - Step 4: Simplify right side
140,249,721.24x = 15,167,910,526,888,364 - Step 5: Solve for x
x = 15,167,910,526,888,364/140,249,721.24 - Step 6: Final answer
x = 108,149,309.62
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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.