Finding the Fourth Proportional to 97,845.60, 135,094.32 and 72,357.60
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Solution
The fourth proportional to 97,845.60, 135,094.32 and 72,357.60 is: 99,903.32
Step by Step Solution
- Step 1: Write the proportion equation
97,845.60 : 135,094.32 = 72,357.60 : x - Step 2: Convert to fraction form
97,845.60/135,094.32 = 72,357.60/x - Step 3: Cross multiply
97,845.60x = 135,094.32 × 72,357.60 - Step 4: Simplify right side
97,845.60x = 9,775,100,768.83 - Step 5: Solve for x
x = 9,775,100,768.83/97,845.60 - Step 6: Final answer
x = 99,903.32
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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.