Finding the Fourth Proportional to 135,024.12, 186,307.32 and 81,312.60
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Solution
The fourth proportional to 135,024.12, 186,307.32 and 81,312.60 is: 112,195.75
Step by Step Solution
- Step 1: Write the proportion equation
135,024.12 : 186,307.32 = 81,312.60 : x - Step 2: Convert to fraction form
135,024.12/186,307.32 = 81,312.60/x - Step 3: Cross multiply
135,024.12x = 186,307.32 × 81,312.60 - Step 4: Simplify right side
135,024.12x = 15,149,132,588.23 - Step 5: Solve for x
x = 15,149,132,588.23/135,024.12 - Step 6: Final answer
x = 112,195.75
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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.