Finding the Fourth Proportional to 106,965.68, 147,644.64 and 69,242.48
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Solution
The fourth proportional to 106,965.68, 147,644.64 and 69,242.48 is: 95,575.34
Step by Step Solution
- Step 1: Write the proportion equation
106,965.68 : 147,644.64 = 69,242.48 : x - Step 2: Convert to fraction form
106,965.68/147,644.64 = 69,242.48/x - Step 3: Cross multiply
106,965.68x = 147,644.64 × 69,242.48 - Step 4: Simplify right side
106,965.68x = 10,223,281,032.31 - Step 5: Solve for x
x = 10,223,281,032.31/106,965.68 - Step 6: Final answer
x = 95,575.34
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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.