Finding the Fourth Proportional to 153,557.51, 211,906.49 and 85,572.99
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Solution
The fourth proportional to 153,557.51, 211,906.49 and 85,572.99 is: 118,089.12
Step by Step Solution
- Step 1: Write the proportion equation
153,557.51 : 211,906.49 = 85,572.99 : x - Step 2: Convert to fraction form
153,557.51/211,906.49 = 85,572.99/x - Step 3: Cross multiply
153,557.51x = 211,906.49 × 85,572.99 - Step 4: Simplify right side
153,557.51x = 18,133,470,992.07 - Step 5: Solve for x
x = 18,133,470,992.07/153,557.51 - Step 6: Final answer
x = 118,089.12
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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.