Finding the Fourth Proportional to 97,907.36, 135,176.16 and 61,661.60
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Solution
The fourth proportional to 97,907.36, 135,176.16 and 61,661.60 is: 85,133.32
Step by Step Solution
- Step 1: Write the proportion equation
97,907.36 : 135,176.16 = 61,661.60 : x - Step 2: Convert to fraction form
97,907.36/135,176.16 = 61,661.60/x - Step 3: Cross multiply
97,907.36x = 135,176.16 × 61,661.60 - Step 4: Simplify right side
97,907.36x = 8,335,178,307.46 - Step 5: Solve for x
x = 8,335,178,307.46/97,907.36 - Step 6: Final answer
x = 85,133.32
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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.