Finding the Fourth Proportional to 124,828.80, 187,243.20 and 84,739.20
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Solution
The fourth proportional to 124,828.80, 187,243.20 and 84,739.20 is: 127,108.80
Step by Step Solution
- Step 1: Write the proportion equation
124,828.80 : 187,243.20 = 84,739.20 : x - Step 2: Convert to fraction form
124,828.80/187,243.20 = 84,739.20/x - Step 3: Cross multiply
124,828.80x = 187,243.20 × 84,739.20 - Step 4: Simplify right side
124,828.80x = 15,866,838,973.44 - Step 5: Solve for x
x = 15,866,838,973.44/124,828.80 - Step 6: Final answer
x = 127,108.80
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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.