Finding the Fourth Proportional to 105,666.68, 145,817.70 and 57,918.99
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Solution
The fourth proportional to 105,666.68, 145,817.70 and 57,918.99 is: 79,926.94
Step by Step Solution
- Step 1: Write the proportion equation
105,666.68 : 145,817.70 = 57,918.99 : x - Step 2: Convert to fraction form
105,666.68/145,817.70 = 57,918.99/x - Step 3: Cross multiply
105,666.68x = 145,817.70 × 57,918.99 - Step 4: Simplify right side
105,666.68x = 8,445,613,908.12 - Step 5: Solve for x
x = 8,445,613,908.12/105,666.68 - Step 6: Final answer
x = 79,926.94
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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.