Finding the Fourth Proportional to 145,661.08, 201,009.19 and 81,130.11
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Solution
The fourth proportional to 145,661.08, 201,009.19 and 81,130.11 is: 111,957.82
Step by Step Solution
- Step 1: Write the proportion equation
145,661.08 : 201,009.19 = 81,130.11 : x - Step 2: Convert to fraction form
145,661.08/201,009.19 = 81,130.11/x - Step 3: Cross multiply
145,661.08x = 201,009.19 × 81,130.11 - Step 4: Simplify right side
145,661.08x = 16,307,897,695.71 - Step 5: Solve for x
x = 16,307,897,695.71/145,661.08 - Step 6: Final answer
x = 111,957.82
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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.