Finding the Fourth Proportional to 205,318.74, 307,924.65 and 86,929.14
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Solution
The fourth proportional to 205,318.74, 307,924.65 and 86,929.14 is: 130,371.08
Step by Step Solution
- Step 1: Write the proportion equation
205,318.74 : 307,924.65 = 86,929.14 : x - Step 2: Convert to fraction form
205,318.74/307,924.65 = 86,929.14/x - Step 3: Cross multiply
205,318.74x = 307,924.65 × 86,929.14 - Step 4: Simplify right side
205,318.74x = 26,767,625,009.30 - Step 5: Solve for x
x = 26,767,625,009.30/205,318.74 - Step 6: Final answer
x = 130,371.08
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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.