Finding the Fourth Proportional to 201,681,289.71, 278,334,432.98 and 112,379,161.97
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Solution
The fourth proportional to 201,681,289.71, 278,334,432.98 and 112,379,161.97 is: 155,091,185.55
Step by Step Solution
- Step 1: Write the proportion equation
201,681,289.71 : 278,334,432.98 = 112,379,161.97 : x - Step 2: Convert to fraction form
201,681,289.71/278,334,432.98 = 112,379,161.97/x - Step 3: Cross multiply
201,681,289.71x = 278,334,432.98 × 112,379,161.97 - Step 4: Simplify right side
201,681,289.71x = 31,278,990,323,733,964 - Step 5: Solve for x
x = 31,278,990,323,733,964/201,681,289.71 - Step 6: Final answer
x = 155,091,185.55
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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.