Finding the Fourth Proportional to 135,771,241.90, 187,384,059.12 and 76,239,221.08
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Solution
The fourth proportional to 135,771,241.90, 187,384,059.12 and 76,239,221.08 is: 105,221,212.61
Step by Step Solution
- Step 1: Write the proportion equation
135,771,241.90 : 187,384,059.12 = 76,239,221.08 : x - Step 2: Convert to fraction form
135,771,241.90/187,384,059.12 = 76,239,221.08/x - Step 3: Cross multiply
135,771,241.90x = 187,384,059.12 × 76,239,221.08 - Step 4: Simplify right side
135,771,241.90x = 14,286,014,710,117,470 - Step 5: Solve for x
x = 14,286,014,710,117,470/135,771,241.90 - Step 6: Final answer
x = 105,221,212.61
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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.