Finding the Fourth Proportional to 150,644.13, 207,907.35 and 86,981.79
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Solution
The fourth proportional to 150,644.13, 207,907.35 and 86,981.79 is: 120,045.52
Step by Step Solution
- Step 1: Write the proportion equation
150,644.13 : 207,907.35 = 86,981.79 : x - Step 2: Convert to fraction form
150,644.13/207,907.35 = 86,981.79/x - Step 3: Cross multiply
150,644.13x = 207,907.35 × 86,981.79 - Step 4: Simplify right side
150,644.13x = 18,084,153,457.16 - Step 5: Solve for x
x = 18,084,153,457.16/150,644.13 - Step 6: Final answer
x = 120,045.52
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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.