Finding the Fourth Proportional to 153,355.68, 211,628.58 and 85,372.53
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Solution
The fourth proportional to 153,355.68, 211,628.58 and 85,372.53 is: 117,812.83
Step by Step Solution
- Step 1: Write the proportion equation
153,355.68 : 211,628.58 = 85,372.53 : x - Step 2: Convert to fraction form
153,355.68/211,628.58 = 85,372.53/x - Step 3: Cross multiply
153,355.68x = 211,628.58 × 85,372.53 - Step 4: Simplify right side
153,355.68x = 18,067,267,294.91 - Step 5: Solve for x
x = 18,067,267,294.91/153,355.68 - Step 6: Final answer
x = 117,812.83
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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.