Finding the Fourth Proportional to 153,781.10, 211,902.99 and 113,430.95
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Solution
The fourth proportional to 153,781.10, 211,902.99 and 113,430.95 is: 156,302.42
Step by Step Solution
- Step 1: Write the proportion equation
153,781.10 : 211,902.99 = 113,430.95 : x - Step 2: Convert to fraction form
153,781.10/211,902.99 = 113,430.95/x - Step 3: Cross multiply
153,781.10x = 211,902.99 × 113,430.95 - Step 4: Simplify right side
153,781.10x = 24,036,357,463.54 - Step 5: Solve for x
x = 24,036,357,463.54/153,781.10 - Step 6: Final answer
x = 156,302.42
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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.