Finding the Fourth Proportional to 139,968,117.70, 209,952,176.55 and 71,943,669.70
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Solution
The fourth proportional to 139,968,117.70, 209,952,176.55 and 71,943,669.70 is: 107,915,504.55
Step by Step Solution
- Step 1: Write the proportion equation
139,968,117.70 : 209,952,176.55 = 71,943,669.70 : x - Step 2: Convert to fraction form
139,968,117.70/209,952,176.55 = 71,943,669.70/x - Step 3: Cross multiply
139,968,117.70x = 209,952,176.55 × 71,943,669.70 - Step 4: Simplify right side
139,968,117.70x = 15,104,730,042,509,288 - Step 5: Solve for x
x = 15,104,730,042,509,288/139,968,117.70 - Step 6: Final answer
x = 107,915,504.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.