Finding the Fourth Proportional to 158,857.98, 219,225.56 and 87,239.53
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Solution
The fourth proportional to 158,857.98, 219,225.56 and 87,239.53 is: 120,391.40
Step by Step Solution
- Step 1: Write the proportion equation
158,857.98 : 219,225.56 = 87,239.53 : x - Step 2: Convert to fraction form
158,857.98/219,225.56 = 87,239.53/x - Step 3: Cross multiply
158,857.98x = 219,225.56 × 87,239.53 - Step 4: Simplify right side
158,857.98x = 19,125,134,656.22 - Step 5: Solve for x
x = 19,125,134,656.22/158,857.98 - Step 6: Final answer
x = 120,391.40
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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.