Finding the Fourth Proportional to 130,962.20, 180,729.08 and 74,373.98
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Solution
The fourth proportional to 130,962.20, 180,729.08 and 74,373.98 is: 102,636.80
Step by Step Solution
- Step 1: Write the proportion equation
130,962.20 : 180,729.08 = 74,373.98 : x - Step 2: Convert to fraction form
130,962.20/180,729.08 = 74,373.98/x - Step 3: Cross multiply
130,962.20x = 180,729.08 × 74,373.98 - Step 4: Simplify right side
130,962.20x = 13,441,540,981.34 - Step 5: Solve for x
x = 13,441,540,981.34/130,962.20 - Step 6: Final answer
x = 102,636.80
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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.