Finding the Fourth Proportional to 153,079.65, 211,352.99 and 136,896.76
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Solution
The fourth proportional to 153,079.65, 211,352.99 and 136,896.76 is: 189,009.70
Step by Step Solution
- Step 1: Write the proportion equation
153,079.65 : 211,352.99 = 136,896.76 : x - Step 2: Convert to fraction form
153,079.65/211,352.99 = 136,896.76/x - Step 3: Cross multiply
153,079.65x = 211,352.99 × 136,896.76 - Step 4: Simplify right side
153,079.65x = 28,933,538,334.45 - Step 5: Solve for x
x = 28,933,538,334.45/153,079.65 - Step 6: Final answer
x = 189,009.70
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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.