Finding the Fourth Proportional to 106,777.78, 147,318.12 and 68,558.74
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Solution
The fourth proportional to 106,777.78, 147,318.12 and 68,558.74 is: 94,588.45
Step by Step Solution
- Step 1: Write the proportion equation
106,777.78 : 147,318.12 = 68,558.74 : x - Step 2: Convert to fraction form
106,777.78/147,318.12 = 68,558.74/x - Step 3: Cross multiply
106,777.78x = 147,318.12 × 68,558.74 - Step 4: Simplify right side
106,777.78x = 10,099,944,686.37 - Step 5: Solve for x
x = 10,099,944,686.37/106,777.78 - Step 6: Final answer
x = 94,588.45
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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.