Finding the Fourth Proportional to 130,474.62, 180,051.92 and 76,763.09
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Solution
The fourth proportional to 130,474.62, 180,051.92 and 76,763.09 is: 105,931.27
Step by Step Solution
- Step 1: Write the proportion equation
130,474.62 : 180,051.92 = 76,763.09 : x - Step 2: Convert to fraction form
130,474.62/180,051.92 = 76,763.09/x - Step 3: Cross multiply
130,474.62x = 180,051.92 × 76,763.09 - Step 4: Simplify right side
130,474.62x = 13,821,341,805.95 - Step 5: Solve for x
x = 13,821,341,805.95/130,474.62 - Step 6: Final answer
x = 105,931.27
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1.5x scale
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.