Finding the Fourth Proportional to 163,692.80, 245,539.20 and 84,831.20
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Solution
The fourth proportional to 163,692.80, 245,539.20 and 84,831.20 is: 127,246.80
Step by Step Solution
- Step 1: Write the proportion equation
163,692.80 : 245,539.20 = 84,831.20 : x - Step 2: Convert to fraction form
163,692.80/245,539.20 = 84,831.20/x - Step 3: Cross multiply
163,692.80x = 245,539.20 × 84,831.20 - Step 4: Simplify right side
163,692.80x = 20,829,384,983.04 - Step 5: Solve for x
x = 20,829,384,983.04/163,692.80 - Step 6: Final answer
x = 127,246.80
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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.