Finding the Fourth Proportional to 145,869.84, 219,215.16 and 86,716.08
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Solution
The fourth proportional to 145,869.84, 219,215.16 and 86,716.08 is: 130,318.09
Step by Step Solution
- Step 1: Write the proportion equation
145,869.84 : 219,215.16 = 86,716.08 : x - Step 2: Convert to fraction form
145,869.84/219,215.16 = 86,716.08/x - Step 3: Cross multiply
145,869.84x = 219,215.16 × 86,716.08 - Step 4: Simplify right side
145,869.84x = 19,009,479,351.77 - Step 5: Solve for x
x = 19,009,479,351.77/145,869.84 - Step 6: Final answer
x = 130,318.09
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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.