Finding the Fourth Proportional to 135,683.79, 187,027.36 and 106,956.64
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Solution
The fourth proportional to 135,683.79, 187,027.36 and 106,956.64 is: 147,429.68
Step by Step Solution
- Step 1: Write the proportion equation
135,683.79 : 187,027.36 = 106,956.64 : x - Step 2: Convert to fraction form
135,683.79/187,027.36 = 106,956.64/x - Step 3: Cross multiply
135,683.79x = 187,027.36 × 106,956.64 - Step 4: Simplify right side
135,683.79x = 20,003,818,013.67 - Step 5: Solve for x
x = 20,003,818,013.67/135,683.79 - Step 6: Final answer
x = 147,429.68
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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.