Finding the Fourth Proportional to 118,645.18, 163,728.16 and 64,929.12
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Solution
The fourth proportional to 118,645.18, 163,728.16 and 64,929.12 is: 89,600.99
Step by Step Solution
- Step 1: Write the proportion equation
118,645.18 : 163,728.16 = 64,929.12 : x - Step 2: Convert to fraction form
118,645.18/163,728.16 = 64,929.12/x - Step 3: Cross multiply
118,645.18x = 163,728.16 × 64,929.12 - Step 4: Simplify right side
118,645.18x = 10,630,725,429.18 - Step 5: Solve for x
x = 10,630,725,429.18/118,645.18 - Step 6: Final answer
x = 89,600.99
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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.