Finding the Fourth Proportional to 128,259,901.08, 176,993,921.60 and 69,521,305.06
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Solution
The fourth proportional to 128,259,901.08, 176,993,921.60 and 69,521,305.06 is: 95,936,830.72
Step by Step Solution
- Step 1: Write the proportion equation
128,259,901.08 : 176,993,921.60 = 69,521,305.06 : x - Step 2: Convert to fraction form
128,259,901.08/176,993,921.60 = 69,521,305.06/x - Step 3: Cross multiply
128,259,901.08x = 176,993,921.60 × 69,521,305.06 - Step 4: Simplify right side
128,259,901.08x = 12,304,848,417,319,324 - Step 5: Solve for x
x = 12,304,848,417,319,324/128,259,901.08 - Step 6: Final answer
x = 95,936,830.72
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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.