Finding the Fourth Proportional to 118,393.76, 163,394.64 and 64,686.84
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Solution
The fourth proportional to 118,393.76, 163,394.64 and 64,686.84 is: 89,273.99
Step by Step Solution
- Step 1: Write the proportion equation
118,393.76 : 163,394.64 = 64,686.84 : x - Step 2: Convert to fraction form
118,393.76/163,394.64 = 64,686.84/x - Step 3: Cross multiply
118,393.76x = 163,394.64 × 64,686.84 - Step 4: Simplify right side
118,393.76x = 10,569,482,934.54 - Step 5: Solve for x
x = 10,569,482,934.54/118,393.76 - Step 6: Final answer
x = 89,273.99
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1.5x scale
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.