Finding the Fourth Proportional to 102,655.13, 141,664.14 and 57,943.13
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Solution
The fourth proportional to 102,655.13, 141,664.14 and 57,943.13 is: 79,961.55
Step by Step Solution
- Step 1: Write the proportion equation
102,655.13 : 141,664.14 = 57,943.13 : x - Step 2: Convert to fraction form
102,655.13/141,664.14 = 57,943.13/x - Step 3: Cross multiply
102,655.13x = 141,664.14 × 57,943.13 - Step 4: Simplify right side
102,655.13x = 8,208,462,972.04 - Step 5: Solve for x
x = 8,208,462,972.04/102,655.13 - Step 6: Final answer
x = 79,961.55
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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.