Finding the Fourth Proportional to 124,605.90, 171,954.99 and 76,840.14
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Solution
The fourth proportional to 124,605.90, 171,954.99 and 76,840.14 is: 106,038.68
Step by Step Solution
- Step 1: Write the proportion equation
124,605.90 : 171,954.99 = 76,840.14 : x - Step 2: Convert to fraction form
124,605.90/171,954.99 = 76,840.14/x - Step 3: Cross multiply
124,605.90x = 171,954.99 × 76,840.14 - Step 4: Simplify right side
124,605.90x = 13,213,045,505.30 - Step 5: Solve for x
x = 13,213,045,505.30/124,605.90 - Step 6: Final answer
x = 106,038.68
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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.