Finding the Fourth Proportional to 147,135.21, 203,053.25 and 86,708.40
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Solution
The fourth proportional to 147,135.21, 203,053.25 and 86,708.40 is: 119,661.52
Step by Step Solution
- Step 1: Write the proportion equation
147,135.21 : 203,053.25 = 86,708.40 : x - Step 2: Convert to fraction form
147,135.21/203,053.25 = 86,708.40/x - Step 3: Cross multiply
147,135.21x = 203,053.25 × 86,708.40 - Step 4: Simplify right side
147,135.21x = 17,606,421,877.62 - Step 5: Solve for x
x = 17,606,421,877.62/147,135.21 - Step 6: Final answer
x = 119,661.52
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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.