Finding the Fourth Proportional to 153,534.99, 211,893.87 and 85,563.03
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Solution
The fourth proportional to 153,534.99, 211,893.87 and 85,563.03 is: 118,085.67
Step by Step Solution
- Step 1: Write the proportion equation
153,534.99 : 211,893.87 = 85,563.03 : x - Step 2: Convert to fraction form
153,534.99/211,893.87 = 85,563.03/x - Step 3: Cross multiply
153,534.99x = 211,893.87 × 85,563.03 - Step 4: Simplify right side
153,534.99x = 18,130,281,555.63 - Step 5: Solve for x
x = 18,130,281,555.63/153,534.99 - Step 6: Final answer
x = 118,085.67
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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.