Finding the Fourth Proportional to 140,249,728.99, 193,540,913.34 and 78,370,576.03
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Solution
The fourth proportional to 140,249,728.99, 193,540,913.34 and 78,370,576.03 is: 108,149,320.31
Step by Step Solution
- Step 1: Write the proportion equation
140,249,728.99 : 193,540,913.34 = 78,370,576.03 : x - Step 2: Convert to fraction form
140,249,728.99/193,540,913.34 = 78,370,576.03/x - Step 3: Cross multiply
140,249,728.99x = 193,540,913.34 × 78,370,576.03 - Step 4: Simplify right side
140,249,728.99x = 15,167,912,863,828,112 - Step 5: Solve for x
x = 15,167,912,863,828,112/140,249,728.99 - Step 6: Final answer
x = 108,149,320.31
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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.