Finding the Fourth Proportional to 128,419.60, 192,859.80 and 93,398.80
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Solution
The fourth proportional to 128,419.60, 192,859.80 and 93,398.80 is: 140,265.77
Step by Step Solution
- Step 1: Write the proportion equation
128,419.60 : 192,859.80 = 93,398.80 : x - Step 2: Convert to fraction form
128,419.60/192,859.80 = 93,398.80/x - Step 3: Cross multiply
128,419.60x = 192,859.80 × 93,398.80 - Step 4: Simplify right side
128,419.60x = 18,012,873,888.24 - Step 5: Solve for x
x = 18,012,873,888.24/128,419.60 - Step 6: Final answer
x = 140,265.77
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.