Finding the Fourth Proportional to 101,220.68, 139,684.74 and 56,508.68
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Solution
The fourth proportional to 101,220.68, 139,684.74 and 56,508.68 is: 77,982.09
Step by Step Solution
- Step 1: Write the proportion equation
101,220.68 : 139,684.74 = 56,508.68 : x - Step 2: Convert to fraction form
101,220.68/139,684.74 = 56,508.68/x - Step 3: Cross multiply
101,220.68x = 139,684.74 × 56,508.68 - Step 4: Simplify right side
101,220.68x = 7,893,400,273.54 - Step 5: Solve for x
x = 7,893,400,273.54/101,220.68 - Step 6: Final answer
x = 77,982.09
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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.