Finding the Fourth Proportional to 153,583.99, 211,946.94 and 85,605.34
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Solution
The fourth proportional to 153,583.99, 211,946.94 and 85,605.34 is: 118,135.95
Step by Step Solution
- Step 1: Write the proportion equation
153,583.99 : 211,946.94 = 85,605.34 : x - Step 2: Convert to fraction form
153,583.99/211,946.94 = 85,605.34/x - Step 3: Cross multiply
153,583.99x = 211,946.94 × 85,605.34 - Step 4: Simplify right side
153,583.99x = 18,143,789,860.66 - Step 5: Solve for x
x = 18,143,789,860.66/153,583.99 - Step 6: Final answer
x = 118,135.95
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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.