Finding the Fourth Proportional to 157,781.80, 217,740.09 and 89,803.99
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Solution
The fourth proportional to 157,781.80, 217,740.09 and 89,803.99 is: 123,930.19
Step by Step Solution
- Step 1: Write the proportion equation
157,781.80 : 217,740.09 = 89,803.99 : x - Step 2: Convert to fraction form
157,781.80/217,740.09 = 89,803.99/x - Step 3: Cross multiply
157,781.80x = 217,740.09 × 89,803.99 - Step 4: Simplify right side
157,781.80x = 19,553,928,864.96 - Step 5: Solve for x
x = 19,553,928,864.96/157,781.80 - Step 6: Final answer
x = 123,930.19
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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.