Finding the Fourth Proportional to 157,730.95, 217,672.01 and 86,113.99
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Solution
The fourth proportional to 157,730.95, 217,672.01 and 86,113.99 is: 118,839.11
Step by Step Solution
- Step 1: Write the proportion equation
157,730.95 : 217,672.01 = 86,113.99 : x - Step 2: Convert to fraction form
157,730.95/217,672.01 = 86,113.99/x - Step 3: Cross multiply
157,730.95x = 217,672.01 × 86,113.99 - Step 4: Simplify right side
157,730.95x = 18,744,605,292.42 - Step 5: Solve for x
x = 18,744,605,292.42/157,730.95 - Step 6: Final answer
x = 118,839.11
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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.