Finding the Fourth Proportional to 235,553.05, 325,068.56 and 128,128.83
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Solution
The fourth proportional to 235,553.05, 325,068.56 and 128,128.83 is: 176,820.70
Step by Step Solution
- Step 1: Write the proportion equation
235,553.05 : 325,068.56 = 128,128.83 : x - Step 2: Convert to fraction form
235,553.05/325,068.56 = 128,128.83/x - Step 3: Cross multiply
235,553.05x = 325,068.56 × 128,128.83 - Step 4: Simplify right side
235,553.05x = 41,650,654,262.58 - Step 5: Solve for x
x = 41,650,654,262.58/235,553.05 - Step 6: Final answer
x = 176,820.70
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1.5x scale
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.