Finding the Fourth Proportional to 120,005.65, 165,483.75 and 103,065.99
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Solution
The fourth proportional to 120,005.65, 165,483.75 and 103,065.99 is: 142,124.53
Step by Step Solution
- Step 1: Write the proportion equation
120,005.65 : 165,483.75 = 103,065.99 : x - Step 2: Convert to fraction form
120,005.65/165,483.75 = 103,065.99/x - Step 3: Cross multiply
120,005.65x = 165,483.75 × 103,065.99 - Step 4: Simplify right side
120,005.65x = 17,055,746,522.66 - Step 5: Solve for x
x = 17,055,746,522.66/120,005.65 - Step 6: Final answer
x = 142,124.53
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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.