Finding the Fourth Proportional to 147,979.21, 221,970.86 and 48,139.93
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Solution
The fourth proportional to 147,979.21, 221,970.86 and 48,139.93 is: 72,210.56
Step by Step Solution
- Step 1: Write the proportion equation
147,979.21 : 221,970.86 = 48,139.93 : x - Step 2: Convert to fraction form
147,979.21/221,970.86 = 48,139.93/x - Step 3: Cross multiply
147,979.21x = 221,970.86 × 48,139.93 - Step 4: Simplify right side
147,979.21x = 10,685,661,662.44 - Step 5: Solve for x
x = 10,685,661,662.44/147,979.21 - Step 6: Final answer
x = 72,210.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.