Finding the Fourth Proportional to 130,572.76, 180,176.10 and 76,874.68
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Solution
The fourth proportional to 130,572.76, 180,176.10 and 76,874.68 is: 106,078.63
Step by Step Solution
- Step 1: Write the proportion equation
130,572.76 : 180,176.10 = 76,874.68 : x - Step 2: Convert to fraction form
130,572.76/180,176.10 = 76,874.68/x - Step 3: Cross multiply
130,572.76x = 180,176.10 × 76,874.68 - Step 4: Simplify right side
130,572.76x = 13,850,980,031.15 - Step 5: Solve for x
x = 13,850,980,031.15/130,572.76 - Step 6: Final answer
x = 106,078.63
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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.