Finding the Fourth Proportional to 122,624.35, 169,216.16 and 71,641.80
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Solution
The fourth proportional to 122,624.35, 169,216.16 and 71,641.80 is: 98,862.50
Step by Step Solution
- Step 1: Write the proportion equation
122,624.35 : 169,216.16 = 71,641.80 : x - Step 2: Convert to fraction form
122,624.35/169,216.16 = 71,641.80/x - Step 3: Cross multiply
122,624.35x = 169,216.16 × 71,641.80 - Step 4: Simplify right side
122,624.35x = 12,122,949,933.28 - Step 5: Solve for x
x = 12,122,949,933.28/122,624.35 - Step 6: Final answer
x = 98,862.50
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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.