Finding the Fourth Proportional to 118,278.20, 177,417.30 and 84,927.80
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Solution
The fourth proportional to 118,278.20, 177,417.30 and 84,927.80 is: 127,391.70
Step by Step Solution
- Step 1: Write the proportion equation
118,278.20 : 177,417.30 = 84,927.80 : x - Step 2: Convert to fraction form
118,278.20/177,417.30 = 84,927.80/x - Step 3: Cross multiply
118,278.20x = 177,417.30 × 84,927.80 - Step 4: Simplify right side
118,278.20x = 15,067,660,970.94 - Step 5: Solve for x
x = 15,067,660,970.94/118,278.20 - Step 6: Final answer
x = 127,391.70
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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.