Finding the Fourth Proportional to 122,117.10, 183,175.65 and 86,687.70
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Solution
The fourth proportional to 122,117.10, 183,175.65 and 86,687.70 is: 130,031.55
Step by Step Solution
- Step 1: Write the proportion equation
122,117.10 : 183,175.65 = 86,687.70 : x - Step 2: Convert to fraction form
122,117.10/183,175.65 = 86,687.70/x - Step 3: Cross multiply
122,117.10x = 183,175.65 × 86,687.70 - Step 4: Simplify right side
122,117.10x = 15,879,075,794.51 - Step 5: Solve for x
x = 15,879,075,794.51/122,117.10 - Step 6: Final answer
x = 130,031.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.