Finding the Fourth Proportional to 157,805.58, 217,772.91 and 86,184.30
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Solution
The fourth proportional to 157,805.58, 217,772.91 and 86,184.30 is: 118,934.99
Step by Step Solution
- Step 1: Write the proportion equation
157,805.58 : 217,772.91 = 86,184.30 : x - Step 2: Convert to fraction form
157,805.58/217,772.91 = 86,184.30/x - Step 3: Cross multiply
157,805.58x = 217,772.91 × 86,184.30 - Step 4: Simplify right side
157,805.58x = 18,768,605,807.31 - Step 5: Solve for x
x = 18,768,605,807.31/157,805.58 - Step 6: Final answer
x = 118,934.99
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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.