Finding the Fourth Proportional to 120,004.65, 165,482.37 and 103,064.99
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Solution
The fourth proportional to 120,004.65, 165,482.37 and 103,064.99 is: 142,123.14
Step by Step Solution
- Step 1: Write the proportion equation
120,004.65 : 165,482.37 = 103,064.99 : x - Step 2: Convert to fraction form
120,004.65/165,482.37 = 103,064.99/x - Step 3: Cross multiply
120,004.65x = 165,482.37 × 103,064.99 - Step 4: Simplify right side
120,004.65x = 17,055,437,981.81 - Step 5: Solve for x
x = 17,055,437,981.81/120,004.65 - Step 6: Final answer
x = 142,123.14
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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.