Finding the Fourth Proportional to 108,128,446.76, 149,097,709.86 and 68,908,130.12
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Solution
The fourth proportional to 108,128,446.76, 149,097,709.86 and 68,908,130.12 is: 95,017,034.83
Step by Step Solution
- Step 1: Write the proportion equation
108,128,446.76 : 149,097,709.86 = 68,908,130.12 : x - Step 2: Convert to fraction form
108,128,446.76/149,097,709.86 = 68,908,130.12/x - Step 3: Cross multiply
108,128,446.76x = 149,097,709.86 × 68,908,130.12 - Step 4: Simplify right side
108,128,446.76x = 10,274,044,391,626,888 - Step 5: Solve for x
x = 10,274,044,391,626,888/108,128,446.76 - Step 6: Final answer
x = 95,017,034.83
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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.