Finding the Fourth Proportional to 103,689.13, 143,089.36 and 58,366.99
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Solution
The fourth proportional to 103,689.13, 143,089.36 and 58,366.99 is: 80,545.52
Step by Step Solution
- Step 1: Write the proportion equation
103,689.13 : 143,089.36 = 58,366.99 : x - Step 2: Convert to fraction form
103,689.13/143,089.36 = 58,366.99/x - Step 3: Cross multiply
103,689.13x = 143,089.36 × 58,366.99 - Step 4: Simplify right side
103,689.13x = 8,351,695,244.23 - Step 5: Solve for x
x = 8,351,695,244.23/103,689.13 - Step 6: Final answer
x = 80,545.52
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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.