Finding the Fourth Proportional to 140,249,707.74, 193,540,884.03 and 78,370,554.78
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Solution
The fourth proportional to 140,249,707.74, 193,540,884.03 and 78,370,554.78 is: 108,149,290.99
Step by Step Solution
- Step 1: Write the proportion equation
140,249,707.74 : 193,540,884.03 = 78,370,554.78 : x - Step 2: Convert to fraction form
140,249,707.74/193,540,884.03 = 78,370,554.78/x - Step 3: Cross multiply
140,249,707.74x = 193,540,884.03 × 78,370,554.78 - Step 4: Simplify right side
140,249,707.74x = 15,167,906,454,042,742 - Step 5: Solve for x
x = 15,167,906,454,042,742/140,249,707.74 - Step 6: Final answer
x = 108,149,290.99
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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.