Finding the Fourth Proportional to 98,856.18, 136,420.84 and 53,533.12
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Solution
The fourth proportional to 98,856.18, 136,420.84 and 53,533.12 is: 73,875.33
Step by Step Solution
- Step 1: Write the proportion equation
98,856.18 : 136,420.84 = 53,533.12 : x - Step 2: Convert to fraction form
98,856.18/136,420.84 = 53,533.12/x - Step 3: Cross multiply
98,856.18x = 136,420.84 × 53,533.12 - Step 4: Simplify right side
98,856.18x = 7,303,033,198.22 - Step 5: Solve for x
x = 7,303,033,198.22/98,856.18 - Step 6: Final answer
x = 73,875.33
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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.