Finding the Fourth Proportional to 122,585.80, 183,878.70 and 39,479.80
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Solution
The fourth proportional to 122,585.80, 183,878.70 and 39,479.80 is: 59,219.70
Step by Step Solution
- Step 1: Write the proportion equation
122,585.80 : 183,878.70 = 39,479.80 : x - Step 2: Convert to fraction form
122,585.80/183,878.70 = 39,479.80/x - Step 3: Cross multiply
122,585.80x = 183,878.70 × 39,479.80 - Step 4: Simplify right side
122,585.80x = 7,259,494,300.26 - Step 5: Solve for x
x = 7,259,494,300.26/122,585.80 - Step 6: Final answer
x = 59,219.70
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1.5x scale
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.