Finding the Fourth Proportional to 156,252.21, 215,612.64 and 87,328.95
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Solution
The fourth proportional to 156,252.21, 215,612.64 and 87,328.95 is: 120,505.34
Step by Step Solution
- Step 1: Write the proportion equation
156,252.21 : 215,612.64 = 87,328.95 : x - Step 2: Convert to fraction form
156,252.21/215,612.64 = 87,328.95/x - Step 3: Cross multiply
156,252.21x = 215,612.64 × 87,328.95 - Step 4: Simplify right side
156,252.21x = 18,829,225,457.93 - Step 5: Solve for x
x = 18,829,225,457.93/156,252.21 - Step 6: Final answer
x = 120,505.34
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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.