Finding the Fourth Proportional to 128,045.48, 176,701.74 and 74,335.48
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Solution
The fourth proportional to 128,045.48, 176,701.74 and 74,335.48 is: 102,582.37
Step by Step Solution
- Step 1: Write the proportion equation
128,045.48 : 176,701.74 = 74,335.48 : x - Step 2: Convert to fraction form
128,045.48/176,701.74 = 74,335.48/x - Step 3: Cross multiply
128,045.48x = 176,701.74 × 74,335.48 - Step 4: Simplify right side
128,045.48x = 13,135,208,659.74 - Step 5: Solve for x
x = 13,135,208,659.74/128,045.48 - Step 6: Final answer
x = 102,582.37
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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.