Finding the Fourth Proportional to 153,152.91, 211,320.05 and 89,478.41
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Solution
The fourth proportional to 153,152.91, 211,320.05 and 89,478.41 is: 123,462.10
Step by Step Solution
- Step 1: Write the proportion equation
153,152.91 : 211,320.05 = 89,478.41 : x - Step 2: Convert to fraction form
153,152.91/211,320.05 = 89,478.41/x - Step 3: Cross multiply
153,152.91x = 211,320.05 × 89,478.41 - Step 4: Simplify right side
153,152.91x = 18,908,580,571.13 - Step 5: Solve for x
x = 18,908,580,571.13/153,152.91 - Step 6: Final answer
x = 123,462.10
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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.