Finding the Fourth Proportional to 138,402,275.70, 207,603,413.55 and 80,864,930.10
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Solution
The fourth proportional to 138,402,275.70, 207,603,413.55 and 80,864,930.10 is: 121,297,395.15
Step by Step Solution
- Step 1: Write the proportion equation
138,402,275.70 : 207,603,413.55 = 80,864,930.10 : x - Step 2: Convert to fraction form
138,402,275.70/207,603,413.55 = 80,864,930.10/x - Step 3: Cross multiply
138,402,275.70x = 207,603,413.55 × 80,864,930.10 - Step 4: Simplify right side
138,402,275.70x = 16,787,835,525,242,142 - Step 5: Solve for x
x = 16,787,835,525,242,142/138,402,275.70 - Step 6: Final answer
x = 121,297,395.15
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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.