Finding the Fourth Proportional to 115,989.18, 160,060.23 and 65,688.18
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Solution
The fourth proportional to 115,989.18, 160,060.23 and 65,688.18 is: 90,646.95
Step by Step Solution
- Step 1: Write the proportion equation
115,989.18 : 160,060.23 = 65,688.18 : x - Step 2: Convert to fraction form
115,989.18/160,060.23 = 65,688.18/x - Step 3: Cross multiply
115,989.18x = 160,060.23 × 65,688.18 - Step 4: Simplify right side
115,989.18x = 10,514,065,199.08 - Step 5: Solve for x
x = 10,514,065,199.08/115,989.18 - Step 6: Final answer
x = 90,646.95
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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.