Finding the Fourth Proportional to 158,599.08, 218,869.74 and 86,974.80
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Solution
The fourth proportional to 158,599.08, 218,869.74 and 86,974.80 is: 120,026.87
Step by Step Solution
- Step 1: Write the proportion equation
158,599.08 : 218,869.74 = 86,974.80 : x - Step 2: Convert to fraction form
158,599.08/218,869.74 = 86,974.80/x - Step 3: Cross multiply
158,599.08x = 218,869.74 × 86,974.80 - Step 4: Simplify right side
158,599.08x = 19,036,151,862.55 - Step 5: Solve for x
x = 19,036,151,862.55/158,599.08 - Step 6: Final answer
x = 120,026.87
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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.