Finding the Fourth Proportional to 158,972.16, 219,386.97 and 87,354.75
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Solution
The fourth proportional to 158,972.16, 219,386.97 and 87,354.75 is: 120,552.52
Step by Step Solution
- Step 1: Write the proportion equation
158,972.16 : 219,386.97 = 87,354.75 : x - Step 2: Convert to fraction form
158,972.16/219,386.97 = 87,354.75/x - Step 3: Cross multiply
158,972.16x = 219,386.97 × 87,354.75 - Step 4: Simplify right side
158,972.16x = 19,164,493,917.61 - Step 5: Solve for x
x = 19,164,493,917.61/158,972.16 - Step 6: Final answer
x = 120,552.52
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1.5x scale
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.