Finding the Fourth Proportional to 128,296.89, 177,045.24 and 70,154.99
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Solution
The fourth proportional to 128,296.89, 177,045.24 and 70,154.99 is: 96,811.44
Step by Step Solution
- Step 1: Write the proportion equation
128,296.89 : 177,045.24 = 70,154.99 : x - Step 2: Convert to fraction form
128,296.89/177,045.24 = 70,154.99/x - Step 3: Cross multiply
128,296.89x = 177,045.24 × 70,154.99 - Step 4: Simplify right side
128,296.89x = 12,420,606,156.52 - Step 5: Solve for x
x = 12,420,606,156.52/128,296.89 - Step 6: Final answer
x = 96,811.44
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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.