Finding the Fourth Proportional to 97,918.12, 135,130.17 and 55,475.74
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Solution
The fourth proportional to 97,918.12, 135,130.17 and 55,475.74 is: 76,558.31
Step by Step Solution
- Step 1: Write the proportion equation
97,918.12 : 135,130.17 = 55,475.74 : x - Step 2: Convert to fraction form
97,918.12/135,130.17 = 55,475.74/x - Step 3: Cross multiply
97,918.12x = 135,130.17 × 55,475.74 - Step 4: Simplify right side
97,918.12x = 7,496,446,177.08 - Step 5: Solve for x
x = 7,496,446,177.08/97,918.12 - Step 6: Final answer
x = 76,558.31
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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.