Finding the Fourth Proportional to 156,972.06, 216,624.15 and 85,352.55
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Solution
The fourth proportional to 156,972.06, 216,624.15 and 85,352.55 is: 117,787.99
Step by Step Solution
- Step 1: Write the proportion equation
156,972.06 : 216,624.15 = 85,352.55 : x - Step 2: Convert to fraction form
156,972.06/216,624.15 = 85,352.55/x - Step 3: Cross multiply
156,972.06x = 216,624.15 × 85,352.55 - Step 4: Simplify right side
156,972.06x = 18,489,423,594.08 - Step 5: Solve for x
x = 18,489,423,594.08/156,972.06 - Step 6: Final answer
x = 117,787.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.