Finding the Fourth Proportional to 97,209.70, 145,814.55 and 81,657.70
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Solution
The fourth proportional to 97,209.70, 145,814.55 and 81,657.70 is: 122,486.55
Step by Step Solution
- Step 1: Write the proportion equation
97,209.70 : 145,814.55 = 81,657.70 : x - Step 2: Convert to fraction form
97,209.70/145,814.55 = 81,657.70/x - Step 3: Cross multiply
97,209.70x = 145,814.55 × 81,657.70 - Step 4: Simplify right side
97,209.70x = 11,906,880,779.54 - Step 5: Solve for x
x = 11,906,880,779.54/97,209.70 - Step 6: Final answer
x = 122,486.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.