Finding the Fourth Proportional to 153,246.05, 211,475.51 and 85,263.15
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Solution
The fourth proportional to 153,246.05, 211,475.51 and 85,263.15 is: 117,660.90
Step by Step Solution
- Step 1: Write the proportion equation
153,246.05 : 211,475.51 = 85,263.15 : x - Step 2: Convert to fraction form
153,246.05/211,475.51 = 85,263.15/x - Step 3: Cross multiply
153,246.05x = 211,475.51 × 85,263.15 - Step 4: Simplify right side
153,246.05x = 18,031,067,704.14 - Step 5: Solve for x
x = 18,031,067,704.14/153,246.05 - Step 6: Final answer
x = 117,660.90
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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.