Finding the Fourth Proportional to 133,395.99, 184,148.50 and 78,931.03
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Solution
The fourth proportional to 133,395.99, 184,148.50 and 78,931.03 is: 108,961.53
Step by Step Solution
- Step 1: Write the proportion equation
133,395.99 : 184,148.50 = 78,931.03 : x - Step 2: Convert to fraction form
133,395.99/184,148.50 = 78,931.03/x - Step 3: Cross multiply
133,395.99x = 184,148.50 × 78,931.03 - Step 4: Simplify right side
133,395.99x = 14,535,031,353.44 - Step 5: Solve for x
x = 14,535,031,353.44/133,395.99 - Step 6: Final answer
x = 108,961.53
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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.