Finding the Fourth Proportional to 92,869.93, 128,219.12 and 68,968.45
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Solution
The fourth proportional to 92,869.93, 128,219.12 and 68,968.45 is: 95,219.99
Step by Step Solution
- Step 1: Write the proportion equation
92,869.93 : 128,219.12 = 68,968.45 : x - Step 2: Convert to fraction form
92,869.93/128,219.12 = 68,968.45/x - Step 3: Cross multiply
92,869.93x = 128,219.12 × 68,968.45 - Step 4: Simplify right side
92,869.93x = 8,843,073,966.76 - Step 5: Solve for x
x = 8,843,073,966.76/92,869.93 - Step 6: Final answer
x = 95,219.99
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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.