Finding the Fourth Proportional to 99,246.76, 136,963.12 and 56,818.96
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Solution
The fourth proportional to 99,246.76, 136,963.12 and 56,818.96 is: 78,411.65
Step by Step Solution
- Step 1: Write the proportion equation
99,246.76 : 136,963.12 = 56,818.96 : x - Step 2: Convert to fraction form
99,246.76/136,963.12 = 56,818.96/x - Step 3: Cross multiply
99,246.76x = 136,963.12 × 56,818.96 - Step 4: Simplify right side
99,246.76x = 7,782,102,036.76 - Step 5: Solve for x
x = 7,782,102,036.76/99,246.76 - Step 6: Final answer
x = 78,411.65
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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.