Finding the Fourth Proportional to 153,189.08, 211,398.90 and 86,121.08
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Solution
The fourth proportional to 153,189.08, 211,398.90 and 86,121.08 is: 118,845.95
Step by Step Solution
- Step 1: Write the proportion equation
153,189.08 : 211,398.90 = 86,121.08 : x - Step 2: Convert to fraction form
153,189.08/211,398.90 = 86,121.08/x - Step 3: Cross multiply
153,189.08x = 211,398.90 × 86,121.08 - Step 4: Simplify right side
153,189.08x = 18,205,901,578.81 - Step 5: Solve for x
x = 18,205,901,578.81/153,189.08 - Step 6: Final answer
x = 118,845.95
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1.5x scale
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.