Finding the Fourth Proportional to 118,656.84, 177,819.18 and 78,722.76
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Solution
The fourth proportional to 118,656.84, 177,819.18 and 78,722.76 is: 117,973.95
Step by Step Solution
- Step 1: Write the proportion equation
118,656.84 : 177,819.18 = 78,722.76 : x - Step 2: Convert to fraction form
118,656.84/177,819.18 = 78,722.76/x - Step 3: Cross multiply
118,656.84x = 177,819.18 × 78,722.76 - Step 4: Simplify right side
118,656.84x = 13,998,416,630.54 - Step 5: Solve for x
x = 13,998,416,630.54/118,656.84 - Step 6: Final answer
x = 117,973.95
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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.