Finding the Fourth Proportional to 86,730.80, 121,267.60 and 86,730.80
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Solution
The fourth proportional to 86,730.80, 121,267.60 and 86,730.80 is: 121,267.60
Step by Step Solution
- Step 1: Write the proportion equation
86,730.80 : 121,267.60 = 86,730.80 : x - Step 2: Convert to fraction form
86,730.80/121,267.60 = 86,730.80/x - Step 3: Cross multiply
86,730.80x = 121,267.60 × 86,730.80 - Step 4: Simplify right side
86,730.80x = 10,517,635,962.08 - Step 5: Solve for x
x = 10,517,635,962.08/86,730.80 - Step 6: Final answer
x = 121,267.60
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.