Finding the Fourth Proportional to 118,497.60, 177,746.40 and 76,507.20
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Solution
The fourth proportional to 118,497.60, 177,746.40 and 76,507.20 is: 114,760.80
Step by Step Solution
- Step 1: Write the proportion equation
118,497.60 : 177,746.40 = 76,507.20 : x - Step 2: Convert to fraction form
118,497.60/177,746.40 = 76,507.20/x - Step 3: Cross multiply
118,497.60x = 177,746.40 × 76,507.20 - Step 4: Simplify right side
118,497.60x = 13,598,879,374.08 - Step 5: Solve for x
x = 13,598,879,374.08/118,497.60 - Step 6: Final answer
x = 114,760.80
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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.