Finding the Fourth Proportional to 157,021.13, 216,596.81 and 93,355.13
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Solution
The fourth proportional to 157,021.13, 216,596.81 and 93,355.13 is: 128,775.17
Step by Step Solution
- Step 1: Write the proportion equation
157,021.13 : 216,596.81 = 93,355.13 : x - Step 2: Convert to fraction form
157,021.13/216,596.81 = 93,355.13/x - Step 3: Cross multiply
157,021.13x = 216,596.81 × 93,355.13 - Step 4: Simplify right side
157,021.13x = 20,220,421,805.38 - Step 5: Solve for x
x = 20,220,421,805.38/157,021.13 - Step 6: Final answer
x = 128,775.17
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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.