Finding the Fourth Proportional to 99,119.60, 136,787.08 and 56,099.09
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Solution
The fourth proportional to 99,119.60, 136,787.08 and 56,099.09 is: 77,417.89
Step by Step Solution
- Step 1: Write the proportion equation
99,119.60 : 136,787.08 = 56,099.09 : x - Step 2: Convert to fraction form
99,119.60/136,787.08 = 56,099.09/x - Step 3: Cross multiply
99,119.60x = 136,787.08 × 56,099.09 - Step 4: Simplify right side
99,119.60x = 7,673,629,887.57 - Step 5: Solve for x
x = 7,673,629,887.57/99,119.60 - Step 6: Final answer
x = 77,417.89
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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.