Finding the Fourth Proportional to 142,533.54, 213,374.36 and 86,203.26
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Solution
The fourth proportional to 142,533.54, 213,374.36 and 86,203.26 is: 129,047.28
Step by Step Solution
- Step 1: Write the proportion equation
142,533.54 : 213,374.36 = 86,203.26 : x - Step 2: Convert to fraction form
142,533.54/213,374.36 = 86,203.26/x - Step 3: Cross multiply
142,533.54x = 213,374.36 × 86,203.26 - Step 4: Simplify right side
142,533.54x = 18,393,565,432.41 - Step 5: Solve for x
x = 18,393,565,432.41/142,533.54 - Step 6: Final answer
x = 129,047.28
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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.