Finding the Fourth Proportional to 153,662,877.36, 212,056,415.64 and 84,046,769.64
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Solution
The fourth proportional to 153,662,877.36, 212,056,415.64 and 84,046,769.64 is: 115,985,441.78
Step by Step Solution
- Step 1: Write the proportion equation
153,662,877.36 : 212,056,415.64 = 84,046,769.64 : x - Step 2: Convert to fraction form
153,662,877.36/212,056,415.64 = 84,046,769.64/x - Step 3: Cross multiply
153,662,877.36x = 212,056,415.64 × 84,046,769.64 - Step 4: Simplify right side
153,662,877.36x = 17,822,656,715,979,172 - Step 5: Solve for x
x = 17,822,656,715,979,172/153,662,877.36 - Step 6: Final answer
x = 115,985,441.78
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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.