Finding the Fourth Proportional to 134,638.26, 185,799.79 and 74,209.02
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Solution
The fourth proportional to 134,638.26, 185,799.79 and 74,209.02 is: 102,407.89
Step by Step Solution
- Step 1: Write the proportion equation
134,638.26 : 185,799.79 = 74,209.02 : x - Step 2: Convert to fraction form
134,638.26/185,799.79 = 74,209.02/x - Step 3: Cross multiply
134,638.26x = 185,799.79 × 74,209.02 - Step 4: Simplify right side
134,638.26x = 13,788,020,332.11 - Step 5: Solve for x
x = 13,788,020,332.11/134,638.26 - Step 6: Final answer
x = 102,407.89
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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.