Finding the Fourth Proportional to 128,926.12, 193,309.78 and 44,666.68
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Solution
The fourth proportional to 128,926.12, 193,309.78 and 44,666.68 is: 66,972.51
Step by Step Solution
- Step 1: Write the proportion equation
128,926.12 : 193,309.78 = 44,666.68 : x - Step 2: Convert to fraction form
128,926.12/193,309.78 = 44,666.68/x - Step 3: Cross multiply
128,926.12x = 193,309.78 × 44,666.68 - Step 4: Simplify right side
128,926.12x = 8,634,506,084.13 - Step 5: Solve for x
x = 8,634,506,084.13/128,926.12 - Step 6: Final answer
x = 66,972.51
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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.