Finding the Fourth Proportional to 123,134,901.36, 169,852,126.68 and 81,319,351.20
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Solution
The fourth proportional to 123,134,901.36, 169,852,126.68 and 81,319,351.20 is: 112,171,809.85
Step by Step Solution
- Step 1: Write the proportion equation
123,134,901.36 : 169,852,126.68 = 81,319,351.20 : x - Step 2: Convert to fraction form
123,134,901.36/169,852,126.68 = 81,319,351.20/x - Step 3: Cross multiply
123,134,901.36x = 169,852,126.68 × 81,319,351.20 - Step 4: Simplify right side
123,134,901.36x = 13,812,264,741,557,812 - Step 5: Solve for x
x = 13,812,264,741,557,812/123,134,901.36 - Step 6: Final answer
x = 112,171,809.85
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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.