Finding the Fourth Proportional to 125,248.21, 172,838.95 and 71,532.12
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Solution
The fourth proportional to 125,248.21, 172,838.95 and 71,532.12 is: 98,712.28
Step by Step Solution
- Step 1: Write the proportion equation
125,248.21 : 172,838.95 = 71,532.12 : x - Step 2: Convert to fraction form
125,248.21/172,838.95 = 71,532.12/x - Step 3: Cross multiply
125,248.21x = 172,838.95 × 71,532.12 - Step 4: Simplify right side
125,248.21x = 12,363,536,512.07 - Step 5: Solve for x
x = 12,363,536,512.07/125,248.21 - Step 6: Final answer
x = 98,712.28
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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.