Finding the Fourth Proportional to 122,765.08, 169,417.56 and 72,464.08
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Solution
The fourth proportional to 122,765.08, 169,417.56 and 72,464.08 is: 100,001.46
Step by Step Solution
- Step 1: Write the proportion equation
122,765.08 : 169,417.56 = 72,464.08 : x - Step 2: Convert to fraction form
122,765.08/169,417.56 = 72,464.08/x - Step 3: Cross multiply
122,765.08x = 169,417.56 × 72,464.08 - Step 4: Simplify right side
122,765.08x = 12,276,687,621.24 - Step 5: Solve for x
x = 12,276,687,621.24/122,765.08 - Step 6: Final answer
x = 100,001.46
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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.