Finding the Fourth Proportional to 159,985.76, 239,784.20 and 120,415.68
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Solution
The fourth proportional to 159,985.76, 239,784.20 and 120,415.68 is: 180,477.17
Step by Step Solution
- Step 1: Write the proportion equation
159,985.76 : 239,784.20 = 120,415.68 : x - Step 2: Convert to fraction form
159,985.76/239,784.20 = 120,415.68/x - Step 3: Cross multiply
159,985.76x = 239,784.20 × 120,415.68 - Step 4: Simplify right side
159,985.76x = 28,873,777,496.26 - Step 5: Solve for x
x = 28,873,777,496.26/159,985.76 - Step 6: Final answer
x = 180,477.17
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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.