Finding the Fourth Proportional to 98,368.60, 135,760.86 and 60,120.28
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Solution
The fourth proportional to 98,368.60, 135,760.86 and 60,120.28 is: 82,973.44
Step by Step Solution
- Step 1: Write the proportion equation
98,368.60 : 135,760.86 = 60,120.28 : x - Step 2: Convert to fraction form
98,368.60/135,760.86 = 60,120.28/x - Step 3: Cross multiply
98,368.60x = 135,760.86 × 60,120.28 - Step 4: Simplify right side
98,368.60x = 8,161,980,916.24 - Step 5: Solve for x
x = 8,161,980,916.24/98,368.60 - Step 6: Final answer
x = 82,973.44
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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.