Finding the Fourth Proportional to 138,656.63, 191,346.21 and 74,994.41
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Solution
The fourth proportional to 138,656.63, 191,346.21 and 74,994.41 is: 103,492.32
Step by Step Solution
- Step 1: Write the proportion equation
138,656.63 : 191,346.21 = 74,994.41 : x - Step 2: Convert to fraction form
138,656.63/191,346.21 = 74,994.41/x - Step 3: Cross multiply
138,656.63x = 191,346.21 × 74,994.41 - Step 4: Simplify right side
138,656.63x = 14,349,895,167.96 - Step 5: Solve for x
x = 14,349,895,167.96/138,656.63 - Step 6: Final answer
x = 103,492.32
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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.