Finding the Fourth Proportional to 101,371.08, 139,892.40 and 56,659.08
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Solution
The fourth proportional to 101,371.08, 139,892.40 and 56,659.08 is: 78,189.70
Step by Step Solution
- Step 1: Write the proportion equation
101,371.08 : 139,892.40 = 56,659.08 : x - Step 2: Convert to fraction form
101,371.08/139,892.40 = 56,659.08/x - Step 3: Cross multiply
101,371.08x = 139,892.40 × 56,659.08 - Step 4: Simplify right side
101,371.08x = 7,926,174,682.99 - Step 5: Solve for x
x = 7,926,174,682.99/101,371.08 - Step 6: Final answer
x = 78,189.70
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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.