Finding the Fourth Proportional to 122,216.60, 168,656.10 and 71,226.08
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Solution
The fourth proportional to 122,216.60, 168,656.10 and 71,226.08 is: 98,290.35
Step by Step Solution
- Step 1: Write the proportion equation
122,216.60 : 168,656.10 = 71,226.08 : x - Step 2: Convert to fraction form
122,216.60/168,656.10 = 71,226.08/x - Step 3: Cross multiply
122,216.60x = 168,656.10 × 71,226.08 - Step 4: Simplify right side
122,216.60x = 12,012,712,871.09 - Step 5: Solve for x
x = 12,012,712,871.09/122,216.60 - Step 6: Final answer
x = 98,290.35
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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.