Finding the Fourth Proportional to 154,242.98, 212,866.16 and 86,266.28
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Solution
The fourth proportional to 154,242.98, 212,866.16 and 86,266.28 is: 119,053.53
Step by Step Solution
- Step 1: Write the proportion equation
154,242.98 : 212,866.16 = 86,266.28 : x - Step 2: Convert to fraction form
154,242.98/212,866.16 = 86,266.28/x - Step 3: Cross multiply
154,242.98x = 212,866.16 × 86,266.28 - Step 4: Simplify right side
154,242.98x = 18,363,171,761.08 - Step 5: Solve for x
x = 18,363,171,761.08/154,242.98 - Step 6: Final answer
x = 119,053.53
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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.