Finding the Fourth Proportional to 129,919.42, 179,289.30 and 70,303.42
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Solution
The fourth proportional to 129,919.42, 179,289.30 and 70,303.42 is: 97,018.99
Step by Step Solution
- Step 1: Write the proportion equation
129,919.42 : 179,289.30 = 70,303.42 : x - Step 2: Convert to fraction form
129,919.42/179,289.30 = 70,303.42/x - Step 3: Cross multiply
129,919.42x = 179,289.30 × 70,303.42 - Step 4: Simplify right side
129,919.42x = 12,604,650,959.41 - Step 5: Solve for x
x = 12,604,650,959.41/129,919.42 - Step 6: Final answer
x = 97,018.99
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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.