Finding the Fourth Proportional to 139,215.21, 192,117.09 and 75,552.99
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Solution
The fourth proportional to 139,215.21, 192,117.09 and 75,552.99 is: 104,263.18
Step by Step Solution
- Step 1: Write the proportion equation
139,215.21 : 192,117.09 = 75,552.99 : x - Step 2: Convert to fraction form
139,215.21/192,117.09 = 75,552.99/x - Step 3: Cross multiply
139,215.21x = 192,117.09 × 75,552.99 - Step 4: Simplify right side
139,215.21x = 14,515,020,579.60 - Step 5: Solve for x
x = 14,515,020,579.60/139,215.21 - Step 6: Final answer
x = 104,263.18
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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.