Finding the Fourth Proportional to 101,542.14, 139,877.55 and 86,386.23
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Solution
The fourth proportional to 101,542.14, 139,877.55 and 86,386.23 is: 118,999.80
Step by Step Solution
- Step 1: Write the proportion equation
101,542.14 : 139,877.55 = 86,386.23 : x - Step 2: Convert to fraction form
101,542.14/139,877.55 = 86,386.23/x - Step 3: Cross multiply
101,542.14x = 139,877.55 × 86,386.23 - Step 4: Simplify right side
101,542.14x = 12,083,494,206.14 - Step 5: Solve for x
x = 12,083,494,206.14/101,542.14 - Step 6: Final answer
x = 118,999.80
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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.