Finding the Fourth Proportional to 155,835.20, 215,058.84 and 87,854.70
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Solution
The fourth proportional to 155,835.20, 215,058.84 and 87,854.70 is: 121,243.02
Step by Step Solution
- Step 1: Write the proportion equation
155,835.20 : 215,058.84 = 87,854.70 : x - Step 2: Convert to fraction form
155,835.20/215,058.84 = 87,854.70/x - Step 3: Cross multiply
155,835.20x = 215,058.84 × 87,854.70 - Step 4: Simplify right side
155,835.20x = 18,893,929,870.55 - Step 5: Solve for x
x = 18,893,929,870.55/155,835.20 - Step 6: Final answer
x = 121,243.02
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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.