Finding the Fourth Proportional to 121,702.68, 168,808.92 and 118,465.92
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Solution
The fourth proportional to 121,702.68, 168,808.92 and 118,465.92 is: 164,319.34
Step by Step Solution
- Step 1: Write the proportion equation
121,702.68 : 168,808.92 = 118,465.92 : x - Step 2: Convert to fraction form
121,702.68/168,808.92 = 118,465.92/x - Step 3: Cross multiply
121,702.68x = 168,808.92 × 118,465.92 - Step 4: Simplify right side
121,702.68x = 19,998,104,012.01 - Step 5: Solve for x
x = 19,998,104,012.01/121,702.68 - Step 6: Final answer
x = 164,319.34
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.