Finding the Fourth Proportional to 171,856.09, 257,750.74 and 86,444.20
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Solution
The fourth proportional to 171,856.09, 257,750.74 and 86,444.20 is: 129,649.50
Step by Step Solution
- Step 1: Write the proportion equation
171,856.09 : 257,750.74 = 86,444.20 : x - Step 2: Convert to fraction form
171,856.09/257,750.74 = 86,444.20/x - Step 3: Cross multiply
171,856.09x = 257,750.74 × 86,444.20 - Step 4: Simplify right side
171,856.09x = 22,281,056,518.71 - Step 5: Solve for x
x = 22,281,056,518.71/171,856.09 - Step 6: Final answer
x = 129,649.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.