Finding the Fourth Proportional to 130,695.21, 180,460.98 and 100,432.80
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Solution
The fourth proportional to 130,695.21, 180,460.98 and 100,432.80 is: 138,675.33
Step by Step Solution
- Step 1: Write the proportion equation
130,695.21 : 180,460.98 = 100,432.80 : x - Step 2: Convert to fraction form
130,695.21/180,460.98 = 100,432.80/x - Step 3: Cross multiply
130,695.21x = 180,460.98 × 100,432.80 - Step 4: Simplify right side
130,695.21x = 18,124,201,512.14 - Step 5: Solve for x
x = 18,124,201,512.14/130,695.21 - Step 6: Final answer
x = 138,675.33
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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.