Finding the Fourth Proportional to 163,911.80, 245,835.30 and 79,671.80
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Solution
The fourth proportional to 163,911.80, 245,835.30 and 79,671.80 is: 119,491.95
Step by Step Solution
- Step 1: Write the proportion equation
163,911.80 : 245,835.30 = 79,671.80 : x - Step 2: Convert to fraction form
163,911.80/245,835.30 = 79,671.80/x - Step 3: Cross multiply
163,911.80x = 245,835.30 × 79,671.80 - Step 4: Simplify right side
163,911.80x = 19,586,140,854.54 - Step 5: Solve for x
x = 19,586,140,854.54/163,911.80 - Step 6: Final answer
x = 119,491.95
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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.