Finding the Fourth Proportional to 134,579.72, 185,712.54 and 74,138.48
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Solution
The fourth proportional to 134,579.72, 185,712.54 and 74,138.48 is: 102,306.99
Step by Step Solution
- Step 1: Write the proportion equation
134,579.72 : 185,712.54 = 74,138.48 : x - Step 2: Convert to fraction form
134,579.72/185,712.54 = 74,138.48/x - Step 3: Cross multiply
134,579.72x = 185,712.54 × 74,138.48 - Step 4: Simplify right side
134,579.72x = 13,768,445,432.54 - Step 5: Solve for x
x = 13,768,445,432.54/134,579.72 - Step 6: Final answer
x = 102,306.99
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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.