Finding the Fourth Proportional to 159,938.39, 239,765.03 and 81,011.99
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Solution
The fourth proportional to 159,938.39, 239,765.03 and 81,011.99 is: 121,445.78
Step by Step Solution
- Step 1: Write the proportion equation
159,938.39 : 239,765.03 = 81,011.99 : x - Step 2: Convert to fraction form
159,938.39/239,765.03 = 81,011.99/x - Step 3: Cross multiply
159,938.39x = 239,765.03 × 81,011.99 - Step 4: Simplify right side
159,938.39x = 19,423,841,807.65 - Step 5: Solve for x
x = 19,423,841,807.65/159,938.39 - Step 6: Final answer
x = 121,445.78
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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.