Finding the Fourth Proportional to 117,720.99, 176,407.80 and 69,639.88
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Solution
The fourth proportional to 117,720.99, 176,407.80 and 69,639.88 is: 104,357.07
Step by Step Solution
- Step 1: Write the proportion equation
117,720.99 : 176,407.80 = 69,639.88 : x - Step 2: Convert to fraction form
117,720.99/176,407.80 = 69,639.88/x - Step 3: Cross multiply
117,720.99x = 176,407.80 × 69,639.88 - Step 4: Simplify right side
117,720.99x = 12,285,018,023.06 - Step 5: Solve for x
x = 12,285,018,023.06/117,720.99 - Step 6: Final answer
x = 104,357.07
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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.