Finding the Fourth Proportional to 157,766.12, 217,726.10 and 86,152.80
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Solution
The fourth proportional to 157,766.12, 217,726.10 and 86,152.80 is: 118,895.70
Step by Step Solution
- Step 1: Write the proportion equation
157,766.12 : 217,726.10 = 86,152.80 : x - Step 2: Convert to fraction form
157,766.12/217,726.10 = 86,152.80/x - Step 3: Cross multiply
157,766.12x = 217,726.10 × 86,152.80 - Step 4: Simplify right side
157,766.12x = 18,757,713,148.08 - Step 5: Solve for x
x = 18,757,713,148.08/157,766.12 - Step 6: Final answer
x = 118,895.70
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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.