Finding the Fourth Proportional to 158,970.36, 219,379.05 and 87,354.99
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Solution
The fourth proportional to 158,970.36, 219,379.05 and 87,354.99 is: 120,549.86
Step by Step Solution
- Step 1: Write the proportion equation
158,970.36 : 219,379.05 = 87,354.99 : x - Step 2: Convert to fraction form
158,970.36/219,379.05 = 87,354.99/x - Step 3: Cross multiply
158,970.36x = 219,379.05 × 87,354.99 - Step 4: Simplify right side
158,970.36x = 19,163,854,718.96 - Step 5: Solve for x
x = 19,163,854,718.96/158,970.36 - Step 6: Final answer
x = 120,549.86
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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.