Finding the Fourth Proportional to 139,985.66, 209,935.35 and 40,119.08
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Solution
The fourth proportional to 139,985.66, 209,935.35 and 40,119.08 is: 60,166.26
Step by Step Solution
- Step 1: Write the proportion equation
139,985.66 : 209,935.35 = 40,119.08 : x - Step 2: Convert to fraction form
139,985.66/209,935.35 = 40,119.08/x - Step 3: Cross multiply
139,985.66x = 209,935.35 × 40,119.08 - Step 4: Simplify right side
139,985.66x = 8,422,413,101.48 - Step 5: Solve for x
x = 8,422,413,101.48/139,985.66 - Step 6: Final answer
x = 60,166.26
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.