Finding the Fourth Proportional to 128,153.66, 192,271.62 and 61,598.62
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Solution
The fourth proportional to 128,153.66, 192,271.62 and 61,598.62 is: 92,417.70
Step by Step Solution
- Step 1: Write the proportion equation
128,153.66 : 192,271.62 = 61,598.62 : x - Step 2: Convert to fraction form
128,153.66/192,271.62 = 61,598.62/x - Step 3: Cross multiply
128,153.66x = 192,271.62 × 61,598.62 - Step 4: Simplify right side
128,153.66x = 11,843,666,457.16 - Step 5: Solve for x
x = 11,843,666,457.16/128,153.66 - Step 6: Final answer
x = 92,417.70
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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.