Finding the Fourth Proportional to 157,238.08, 216,985.44 and 85,618.96
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Solution
The fourth proportional to 157,238.08, 216,985.44 and 85,618.96 is: 118,152.47
Step by Step Solution
- Step 1: Write the proportion equation
157,238.08 : 216,985.44 = 85,618.96 : x - Step 2: Convert to fraction form
157,238.08/216,985.44 = 85,618.96/x - Step 3: Cross multiply
157,238.08x = 216,985.44 × 85,618.96 - Step 4: Simplify right side
157,238.08x = 18,578,067,707.94 - Step 5: Solve for x
x = 18,578,067,707.94/157,238.08 - Step 6: Final answer
x = 118,152.47
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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.