Finding the Fourth Proportional to 153,541.53, 211,884.12 and 85,558.23
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Solution
The fourth proportional to 153,541.53, 211,884.12 and 85,558.23 is: 118,068.58
Step by Step Solution
- Step 1: Write the proportion equation
153,541.53 : 211,884.12 = 85,558.23 : x - Step 2: Convert to fraction form
153,541.53/211,884.12 = 85,558.23/x - Step 3: Cross multiply
153,541.53x = 211,884.12 × 85,558.23 - Step 4: Simplify right side
153,541.53x = 18,128,430,272.31 - Step 5: Solve for x
x = 18,128,430,272.31/153,541.53 - Step 6: Final answer
x = 118,068.58
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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.