Finding the Fourth Proportional to 153,655.28, 230,283.12 and 78,711.92
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Solution
The fourth proportional to 153,655.28, 230,283.12 and 78,711.92 is: 117,965.53
Step by Step Solution
- Step 1: Write the proportion equation
153,655.28 : 230,283.12 = 78,711.92 : x - Step 2: Convert to fraction form
153,655.28/230,283.12 = 78,711.92/x - Step 3: Cross multiply
153,655.28x = 230,283.12 × 78,711.92 - Step 4: Simplify right side
153,655.28x = 18,126,026,518.79 - Step 5: Solve for x
x = 18,126,026,518.79/153,655.28 - Step 6: Final answer
x = 117,965.53
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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.