Finding the Fourth Proportional to 163,543.80, 245,315.70 and 142,807.80
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Solution
The fourth proportional to 163,543.80, 245,315.70 and 142,807.80 is: 214,211.70
Step by Step Solution
- Step 1: Write the proportion equation
163,543.80 : 245,315.70 = 142,807.80 : x - Step 2: Convert to fraction form
163,543.80/245,315.70 = 142,807.80/x - Step 3: Cross multiply
163,543.80x = 245,315.70 × 142,807.80 - Step 4: Simplify right side
163,543.80x = 35,032,995,422.46 - Step 5: Solve for x
x = 35,032,995,422.46/163,543.80 - Step 6: Final answer
x = 214,211.70
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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.