Finding the Fourth Proportional to 153,106.94, 211,292.99 and 85,143.20
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Solution
The fourth proportional to 153,106.94, 211,292.99 and 85,143.20 is: 117,500.62
Step by Step Solution
- Step 1: Write the proportion equation
153,106.94 : 211,292.99 = 85,143.20 : x - Step 2: Convert to fraction form
153,106.94/211,292.99 = 85,143.20/x - Step 3: Cross multiply
153,106.94x = 211,292.99 × 85,143.20 - Step 4: Simplify right side
153,106.94x = 17,990,159,823.99 - Step 5: Solve for x
x = 17,990,159,823.99/153,106.94 - Step 6: Final answer
x = 117,500.62
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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.