Finding the Fourth Proportional to 130,785.12, 180,459.36 and 79,786.08
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Solution
The fourth proportional to 130,785.12, 180,459.36 and 79,786.08 is: 110,090.08
Step by Step Solution
- Step 1: Write the proportion equation
130,785.12 : 180,459.36 = 79,786.08 : x - Step 2: Convert to fraction form
130,785.12/180,459.36 = 79,786.08/x - Step 3: Cross multiply
130,785.12x = 180,459.36 × 79,786.08 - Step 4: Simplify right side
130,785.12x = 14,398,144,933.71 - Step 5: Solve for x
x = 14,398,144,933.71/130,785.12 - Step 6: Final answer
x = 110,090.08
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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.