Finding the Fourth Proportional to 153,565.62, 211,915.42 and 89,036.07
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Solution
The fourth proportional to 153,565.62, 211,915.42 and 89,036.07 is: 122,866.80
Step by Step Solution
- Step 1: Write the proportion equation
153,565.62 : 211,915.42 = 89,036.07 : x - Step 2: Convert to fraction form
153,565.62/211,915.42 = 89,036.07/x - Step 3: Cross multiply
153,565.62x = 211,915.42 × 89,036.07 - Step 4: Simplify right side
153,565.62x = 18,868,116,169.20 - Step 5: Solve for x
x = 18,868,116,169.20/153,565.62 - Step 6: Final answer
x = 122,866.80
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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.