Finding the Fourth Proportional to 105,186.06, 145,159.29 and 57,438.99
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Solution
The fourth proportional to 105,186.06, 145,159.29 and 57,438.99 is: 79,267.19
Step by Step Solution
- Step 1: Write the proportion equation
105,186.06 : 145,159.29 = 57,438.99 : x - Step 2: Convert to fraction form
105,186.06/145,159.29 = 57,438.99/x - Step 3: Cross multiply
105,186.06x = 145,159.29 × 57,438.99 - Step 4: Simplify right side
105,186.06x = 8,337,803,006.72 - Step 5: Solve for x
x = 8,337,803,006.72/105,186.06 - Step 6: Final answer
x = 79,267.19
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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.