Finding the Fourth Proportional to 90,203.98, 134,752.84 and 65,029.18
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Solution
The fourth proportional to 90,203.98, 134,752.84 and 65,029.18 is: 97,145.01
Step by Step Solution
- Step 1: Write the proportion equation
90,203.98 : 134,752.84 = 65,029.18 : x - Step 2: Convert to fraction form
90,203.98/134,752.84 = 65,029.18/x - Step 3: Cross multiply
90,203.98x = 134,752.84 × 65,029.18 - Step 4: Simplify right side
90,203.98x = 8,762,866,687.87 - Step 5: Solve for x
x = 8,762,866,687.87/90,203.98 - Step 6: Final answer
x = 97,145.01
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.