Finding the Fourth Proportional to 189,935,519.92, 262,119,209.35 and 105,162,638.07
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Solution
The fourth proportional to 189,935,519.92, 262,119,209.35 and 105,162,638.07 is: 145,128,976.17
Step by Step Solution
- Step 1: Write the proportion equation
189,935,519.92 : 262,119,209.35 = 105,162,638.07 : x - Step 2: Convert to fraction form
189,935,519.92/262,119,209.35 = 105,162,638.07/x - Step 3: Cross multiply
189,935,519.92x = 262,119,209.35 × 105,162,638.07 - Step 4: Simplify right side
189,935,519.92x = 27,565,147,543,805,700 - Step 5: Solve for x
x = 27,565,147,543,805,700/189,935,519.92 - Step 6: Final answer
x = 145,128,976.17
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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.