Finding the Fourth Proportional to 133,145.13, 183,741.30 and 72,714.68
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Solution
The fourth proportional to 133,145.13, 183,741.30 and 72,714.68 is: 100,346.81
Step by Step Solution
- Step 1: Write the proportion equation
133,145.13 : 183,741.30 = 72,714.68 : x - Step 2: Convert to fraction form
133,145.13/183,741.30 = 72,714.68/x - Step 3: Cross multiply
133,145.13x = 183,741.30 × 72,714.68 - Step 4: Simplify right side
133,145.13x = 13,360,688,913.58 - Step 5: Solve for x
x = 13,360,688,913.58/133,145.13 - Step 6: Final answer
x = 100,346.81
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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.