Finding the Fourth Proportional to 157,990.69, 236,937.84 and 83,070.19
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Solution
The fourth proportional to 157,990.69, 236,937.84 and 83,070.19 is: 124,579.94
Step by Step Solution
- Step 1: Write the proportion equation
157,990.69 : 236,937.84 = 83,070.19 : x - Step 2: Convert to fraction form
157,990.69/236,937.84 = 83,070.19/x - Step 3: Cross multiply
157,990.69x = 236,937.84 × 83,070.19 - Step 4: Simplify right side
157,990.69x = 19,682,471,386.99 - Step 5: Solve for x
x = 19,682,471,386.99/157,990.69 - Step 6: Final answer
x = 124,579.94
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.